90477047 has 4 divisors (see below), whose sum is σ = 90671256. Its totient is φ = 90282840.

The previous prime is 90477029. The next prime is 90477067. The reversal of 90477047 is 74077409.

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 90477047 - 2⁶ = 90476983 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 90477047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90477007) 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, 96404 + ... + 97337.

It is an arithmetic number, because the mean of its divisors is an integer number (22667814).

Almost surely, 2^90477047 is an apocalyptic number.

90477047 is a deficient number, since it is larger than the sum of its proper divisors (194209).

90477047 is a wasteful number, since it uses less digits than its factorization.

90477047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194208.

The product of its (nonzero) digits is 49392, while the sum is 38.

The square root of 90477047 is about 9511.9423358218. The cubic root of 90477047 is about 448.9308726372.

The spelling of 90477047 in words is "ninety million, four hundred seventy-seven thousand, forty-seven".