90914977 has 4 divisors (see below), whose sum is σ = 90949140. Its totient is φ = 90880816.

The previous prime is 90914947. The next prime is 90914987. The reversal of 90914977 is 77941909.

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 68409441 + 22505536 = 8271^2 + 4744^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90914977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90914947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12718 + ... + 18535.

It is an arithmetic number, because the mean of its divisors is an integer number (22737285).

Almost surely, 2^90914977 is an apocalyptic number.

It is an amenable number.

90914977 is a deficient number, since it is larger than the sum of its proper divisors (34163).

90914977 is a wasteful number, since it uses less digits than its factorization.

90914977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34162.

The product of its (nonzero) digits is 142884, while the sum is 46.

The square root of 90914977 is about 9534.9345566711. The cubic root of 90914977 is about 449.6540171866.

It can be divided in two parts, 909149 and 77, that added together give a triangular number (909226 = T₁₃₄₈).

The spelling of 90914977 in words is "ninety million, nine hundred fourteen thousand, nine hundred seventy-seven".