84572739 has 24 divisors (see below), whose sum is σ = 131002560. Its totient is φ = 52386048.

The previous prime is 84572737. The next prime is 84572753. The reversal of 84572739 is 93727548.

84572739 is a `hidden beast` number, since 8 + 4 + 572 + 73 + 9 = 666.

It is not a de Polignac number, because 84572739 - 2¹ = 84572737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 84572694 and 84572703.

It is not an unprimeable number, because it can be changed into a prime (84572731) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8589 + ... + 15585.

It is an arithmetic number, because the mean of its divisors is an integer number (5458440).

Almost surely, 2^84572739 is an apocalyptic number.

84572739 is a deficient number, since it is larger than the sum of its proper divisors (46429821).

84572739 is a wasteful number, since it uses less digits than its factorization.

84572739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7099 (or 7096 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 84572739 is about 9196.3437843526. The cubic root of 84572739 is about 438.9450259183.

The spelling of 84572739 in words is "eighty-four million, five hundred seventy-two thousand, seven hundred thirty-nine".