90921016 has 32 divisors (see below), whose sum is σ = 176964480. Its totient is φ = 43747200.

The previous prime is 90921013. The next prime is 90921031. The reversal of 90921016 is 61012909.

90921016 = T₇₇₈₄ + T₇₇₈₅ + T₇₇₈₆.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90921011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47926 + ... + 49786.

It is an arithmetic number, because the mean of its divisors is an integer number (5530140).

Almost surely, 2^90921016 is an apocalyptic number.

90921016 is the 7786-th centered triangular number.

It is an amenable number.

90921016 is a deficient number, since it is larger than the sum of its proper divisors (86043464).

90921016 is a wasteful number, since it uses less digits than its factorization.

90921016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2095 (or 2091 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 90921016 is about 9535.2512289923. The cubic root of 90921016 is about 449.6639730105.

It can be divided in two parts, 909210 and 16, that added together give a triangular number (909226 = T₁₃₄₈).

The spelling of 90921016 in words is "ninety million, nine hundred twenty-one thousand, sixteen".