90349531 has 4 divisors (see below), whose sum is σ = 93264064. Its totient is φ = 87435000.

The previous prime is 90349517. The next prime is 90349537. The reversal of 90349531 is 13594309.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90349531 - 2⁷ = 90349403 is a prime.

It is a super-2 number, since 2×90349531² = 16326075503839922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90349537) 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, 1457220 + ... + 1457281.

It is an arithmetic number, because the mean of its divisors is an integer number (23316016).

Almost surely, 2^90349531 is an apocalyptic number.

90349531 is a deficient number, since it is larger than the sum of its proper divisors (2914533).

90349531 is a wasteful number, since it uses less digits than its factorization.

90349531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2914532.

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 90349531 is about 9505.2370301850. The cubic root of 90349531 is about 448.7198696416.

The spelling of 90349531 in words is "ninety million, three hundred forty-nine thousand, five hundred thirty-one".