90941965 has 4 divisors (see below), whose sum is σ = 109130364. Its totient is φ = 72753568.

The previous prime is 90941957. The next prime is 90941969. The reversal of 90941965 is 56914909.

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

It can be written as a sum of positive squares in 2 ways, for example, as 52041796 + 38900169 = 7214^2 + 6237^2 .

It is a cyclic number.

It is not a de Polignac number, because 90941965 - 2³ = 90941957 is a prime.

It is a super-2 number, since 2×90941965² = 16540881996122450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90941969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9094192 + ... + 9094201.

It is an arithmetic number, because the mean of its divisors is an integer number (27282591).

Almost surely, 2^90941965 is an apocalyptic number.

It is an amenable number.

90941965 is a deficient number, since it is larger than the sum of its proper divisors (18188399).

90941965 is a wasteful number, since it uses less digits than its factorization.

90941965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18188398.

The product of its (nonzero) digits is 87480, while the sum is 43.

The square root of 90941965 is about 9536.3496685052. The cubic root of 90941965 is about 449.6985058669.

The spelling of 90941965 in words is "ninety million, nine hundred forty-one thousand, nine hundred sixty-five".