90869273 has 4 divisors (see below), whose sum is σ = 99130128. Its totient is φ = 82608420.

The previous prime is 90869269. The next prime is 90869287. The reversal of 90869273 is 37296809.

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: 37296809 = 11 ⋅3390619.

It is a cyclic number.

It is not a de Polignac number, because 90869273 - 2² = 90869269 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90869213) 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, 4130411 + ... + 4130432.

It is an arithmetic number, because the mean of its divisors is an integer number (24782532).

Almost surely, 2^90869273 is an apocalyptic number.

It is an amenable number.

90869273 is a deficient number, since it is larger than the sum of its proper divisors (8260855).

90869273 is a wasteful number, since it uses less digits than its factorization.

90869273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8260854.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 90869273 is about 9532.5375949954. The cubic root of 90869273 is about 449.5786558157.

The spelling of 90869273 in words is "ninety million, eight hundred sixty-nine thousand, two hundred seventy-three".