90247669 has 4 divisors (see below), whose sum is σ = 92346496. Its totient is φ = 88148844.

The previous prime is 90247667. The next prime is 90247687. The reversal of 90247669 is 96674209.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 96674209 = 701 ⋅137909.

It is a cyclic number.

It is not a de Polignac number, because 90247669 - 2¹ = 90247667 is a prime.

It is a super-2 number, since 2×90247669² = 16289283519867122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43), and also a Moran number because the ratio is a prime number: 2098783 = 90247669 / (9 + 0 + 2 + 4 + 7 + 6 + 6 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90247667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1049349 + ... + 1049434.

It is an arithmetic number, because the mean of its divisors is an integer number (23086624).

Almost surely, 2^90247669 is an apocalyptic number.

It is an amenable number.

90247669 is a deficient number, since it is larger than the sum of its proper divisors (2098827).

90247669 is a wasteful number, since it uses less digits than its factorization.

90247669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2098826.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 90247669 is about 9499.8773149973. The cubic root of 90247669 is about 448.5511740921.

The spelling of 90247669 in words is "ninety million, two hundred forty-seven thousand, six hundred sixty-nine".