90044477 has 4 divisors (see below), whose sum is σ = 94783680. Its totient is φ = 85305276.

The previous prime is 90044473. The next prime is 90044533. The reversal of 90044477 is 77444009.

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: 77444009 = 7103 ⋅10903.

It is a cyclic number.

It is not a de Polignac number, because 90044477 - 2² = 90044473 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90044473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2369573 + ... + 2369610.

It is an arithmetic number, because the mean of its divisors is an integer number (23695920).

Almost surely, 2^90044477 is an apocalyptic number.

It is an amenable number.

90044477 is a deficient number, since it is larger than the sum of its proper divisors (4739203).

90044477 is a wasteful number, since it uses less digits than its factorization.

90044477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4739202.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 90044477 is about 9489.1768346891. The cubic root of 90044477 is about 448.2142845128.

The spelling of 90044477 in words is "ninety million, forty-four thousand, four hundred seventy-seven".