84907477 has 4 divisors (see below), whose sum is σ = 85049356. Its totient is φ = 84765600.

The previous prime is 84907453. The next prime is 84907483. The reversal of 84907477 is 77470948.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 40271716 + 44635761 = 6346^2 + 6681^2 .

It is a cyclic number.

It is not a de Polignac number, because 84907477 - 2⁷ = 84907349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84907577) 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, 70038 + ... + 71239.

It is an arithmetic number, because the mean of its divisors is an integer number (21262339).

Almost surely, 2^84907477 is an apocalyptic number.

It is an amenable number.

84907477 is a deficient number, since it is larger than the sum of its proper divisors (141879).

84907477 is a wasteful number, since it uses less digits than its factorization.

84907477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141878.

The product of its (nonzero) digits is 395136, while the sum is 46.

The square root of 84907477 is about 9214.5253268956. The cubic root of 84907477 is about 439.5233767980.

Subtracting from 84907477 its reverse (77470948), we obtain a square (7436529 = 2727²).

The spelling of 84907477 in words is "eighty-four million, nine hundred seven thousand, four hundred seventy-seven".