90396537 has 32 divisors (see below), whose sum is σ = 150764544. Its totient is φ = 46804800.

The previous prime is 90396533. The next prime is 90396539. The reversal of 90396537 is 73569309.

It is not a de Polignac number, because 90396537 - 2² = 90396533 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90396533) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 113023 + ... + 113819.

It is an arithmetic number, because the mean of its divisors is an integer number (4711392).

Almost surely, 2^90396537 is an apocalyptic number.

It is an amenable number.

90396537 is a deficient number, since it is larger than the sum of its proper divisors (60368007).

90396537 is a wasteful number, since it uses less digits than its factorization.

90396537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309.

The product of its (nonzero) digits is 153090, while the sum is 42.

The square root of 90396537 is about 9507.7093455785. The cubic root of 90396537 is about 448.7976743964.

It can be divided in two parts, 9039 and 6537, that added together give a triangular number (15576 = T₁₇₆).

The spelling of 90396537 in words is "ninety million, three hundred ninety-six thousand, five hundred thirty-seven".