90967187 has 4 divisors (see below), whose sum is σ = 96318216. Its totient is φ = 85616160.

The previous prime is 90967183. The next prime is 90967211. The reversal of 90967187 is 78176909.

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 90967187 - 2² = 90967183 is a prime.

It is a super-2 number, since 2×90967187² = 16550058221385938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90967183) 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, 2675489 + ... + 2675522.

It is an arithmetic number, because the mean of its divisors is an integer number (24079554).

Almost surely, 2^90967187 is an apocalyptic number.

90967187 is a deficient number, since it is larger than the sum of its proper divisors (5351029).

90967187 is a wasteful number, since it uses less digits than its factorization.

90967187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5351028.

The product of its (nonzero) digits is 190512, while the sum is 47.

The square root of 90967187 is about 9537.6719905855. The cubic root of 90967187 is about 449.7400754082.

The spelling of 90967187 in words is "ninety million, nine hundred sixty-seven thousand, one hundred eighty-seven".