90969737 has 8 divisors (see below), whose sum is σ = 96406056. Its totient is φ = 85542912.

The previous prime is 90969731. The next prime is 90969751. The reversal of 90969737 is 73796909.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8904256 + 82065481 = 2984^2 + 9059^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 90969737 - 2⁴ = 90969721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90969731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30413 + ... + 33269.

It is an arithmetic number, because the mean of its divisors is an integer number (12050757).

Almost surely, 2^90969737 is an apocalyptic number.

It is an amenable number.

90969737 is a deficient number, since it is larger than the sum of its proper divisors (5436319).

90969737 is a wasteful number, since it uses less digits than its factorization.

90969737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4747.

The product of its (nonzero) digits is 642978, while the sum is 50.

The square root of 90969737 is about 9537.8056700690. The cubic root of 90969737 is about 449.7442777531.

The spelling of 90969737 in words is "ninety million, nine hundred sixty-nine thousand, seven hundred thirty-seven".