8139534 has 32 divisors (see below), whose sum is σ = 17644704. Its totient is φ = 2488320.

The previous prime is 8139533. The next prime is 8139541. The reversal of 8139534 is 4359318.

It is a junction number, because it is equal to n+sod(n) for n = 8139495 and 8139504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8139533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18582 + ... + 19014.

It is an arithmetic number, because the mean of its divisors is an integer number (551397).

Almost surely, 2^8139534 is an apocalyptic number.

8139534 is an abundant number, since it is smaller than the sum of its proper divisors (9505170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8139534 is a wasteful number, since it uses less digits than its factorization.

8139534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692.

The product of its digits is 12960, while the sum is 33.

The square root of 8139534 is about 2852.9868559108. The cubic root of 8139534 is about 201.1560877625.

The spelling of 8139534 in words is "eight million, one hundred thirty-nine thousand, five hundred thirty-four".