84472057 has 8 divisors (see below), whose sum is σ = 86102280. Its totient is φ = 82857600.

The previous prime is 84472039. The next prime is 84472061. The reversal of 84472057 is 75027448.

It can be written as a sum of positive squares in 4 ways, for example, as 48038761 + 36433296 = 6931^2 + 6036^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84472057 is a prime.

It is a super-2 number, since 2×84472057² = 14271056827622498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84472067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7173 + ... + 14845.

It is an arithmetic number, because the mean of its divisors is an integer number (10762785).

Almost surely, 2^84472057 is an apocalyptic number.

It is an amenable number.

84472057 is a deficient number, since it is larger than the sum of its proper divisors (1630223).

84472057 is a wasteful number, since it uses less digits than its factorization.

84472057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7883.

The product of its (nonzero) digits is 62720, while the sum is 37.

The square root of 84472057 is about 9190.8681309221. The cubic root of 84472057 is about 438.7707719270.

The spelling of 84472057 in words is "eighty-four million, four hundred seventy-two thousand, fifty-seven".