90451086 has 16 divisors (see below), whose sum is σ = 197347968. Its totient is φ = 27409400.

The previous prime is 90451079. The next prime is 90451093. The reversal of 90451086 is 68015409.

It is an interprime number because it is at equal distance from previous prime (90451079) and next prime (90451093).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 685170 + ... + 685301.

It is an arithmetic number, because the mean of its divisors is an integer number (12334248).

Almost surely, 2^90451086 is an apocalyptic number.

90451086 is an abundant number, since it is smaller than the sum of its proper divisors (106896882).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90451086 is a wasteful number, since it uses less digits than its factorization.

90451086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1370487.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 90451086 is about 9510.5775849840. The cubic root of 90451086 is about 448.8879305885.

The spelling of 90451086 in words is "ninety million, four hundred fifty-one thousand, eighty-six".