90440735 has 32 divisors (see below), whose sum is σ = 137562624. Its totient is φ = 55440000.

The previous prime is 90440729. The next prime is 90440747. The reversal of 90440735 is 53704409.

It is not a de Polignac number, because 90440735 - 2¹⁴ = 90424351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21560 + ... + 25410.

It is an arithmetic number, because the mean of its divisors is an integer number (4298832).

Almost surely, 2^90440735 is an apocalyptic number.

90440735 is a deficient number, since it is larger than the sum of its proper divisors (47121889).

90440735 is a wasteful number, since it uses less digits than its factorization.

90440735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3935.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 90440735 is about 9510.0333858510. The cubic root of 90440735 is about 448.8708067247.

The spelling of 90440735 in words is "ninety million, four hundred forty thousand, seven hundred thirty-five".