90411887 has 8 divisors (see below), whose sum is σ = 91963056. Its totient is φ = 88869312.

The previous prime is 90411883. The next prime is 90411907. The reversal of 90411887 is 78811409.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90411887 - 2² = 90411883 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 90411887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90411883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21188 + ... + 25094.

It is an arithmetic number, because the mean of its divisors is an integer number (11495382).

Almost surely, 2^90411887 is an apocalyptic number.

90411887 is a deficient number, since it is larger than the sum of its proper divisors (1551169).

90411887 is a wasteful number, since it uses less digits than its factorization.

90411887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4297.

The product of its (nonzero) digits is 16128, while the sum is 38.

The square root of 90411887 is about 9508.5165509663. The cubic root of 90411887 is about 448.8230760125.

The spelling of 90411887 in words is "ninety million, four hundred eleven thousand, eight hundred eighty-seven".