90909735 has 16 divisors (see below), whose sum is σ = 166235136. Its totient is φ = 41558688.

The previous prime is 90909733. The next prime is 90909773. The reversal of 90909735 is 53790909.

It is a happy number.

It is not a de Polignac number, because 90909735 - 2¹ = 90909733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90909733) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 432799 + ... + 433008.

It is an arithmetic number, because the mean of its divisors is an integer number (10389696).

Almost surely, 2^90909735 is an apocalyptic number.

90909735 is a deficient number, since it is larger than the sum of its proper divisors (75325401).

90909735 is a wasteful number, since it uses less digits than its factorization.

90909735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865822.

The product of its (nonzero) digits is 76545, while the sum is 42.

The square root of 90909735 is about 9534.6596688083. The cubic root of 90909735 is about 449.6453749301.

The spelling of 90909735 in words is "ninety million, nine hundred nine thousand, seven hundred thirty-five".