90941491 has 4 divisors (see below), whose sum is σ = 91031584. Its totient is φ = 90851400.

The previous prime is 90941453. The next prime is 90941497. The reversal of 90941491 is 19414909.

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 90941491 - 2⁹ = 90940979 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90941491.

It is not an unprimeable number, because it can be changed into a prime (90941497) 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, 43515 + ... + 45556.

It is an arithmetic number, because the mean of its divisors is an integer number (22757896).

Almost surely, 2^90941491 is an apocalyptic number.

90941491 is a deficient number, since it is larger than the sum of its proper divisors (90093).

90941491 is a wasteful number, since it uses less digits than its factorization.

90941491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90092.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 90941491 is about 9536.3248161962. The cubic root of 90941491 is about 449.6977245721.

It can be divided in two parts, 9094 and 1491, that added together give a triangular number (10585 = T₁₄₅).

The spelling of 90941491 in words is "ninety million, nine hundred forty-one thousand, four hundred ninety-one".