90477019 has 4 divisors (see below), whose sum is σ = 90614560. Its totient is φ = 90339480.

The previous prime is 90477017. The next prime is 90477029. The reversal of 90477019 is 91077409.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91077409 = 271 ⋅336079.

It is a cyclic number.

It is not a de Polignac number, because 90477019 - 2¹ = 90477017 is a prime.

It is a super-2 number, since 2×90477019² = 16372181934252722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90477017) 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, 67779 + ... + 69100.

It is an arithmetic number, because the mean of its divisors is an integer number (22653640).

Almost surely, 2^90477019 is an apocalyptic number.

90477019 is a deficient number, since it is larger than the sum of its proper divisors (137541).

90477019 is a wasteful number, since it uses less digits than its factorization.

90477019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137540.

The product of its (nonzero) digits is 15876, while the sum is 37.

The square root of 90477019 is about 9511.9408639877. The cubic root of 90477019 is about 448.9308263268.

The spelling of 90477019 in words is "ninety million, four hundred seventy-seven thousand, nineteen".