8139204 has 30 divisors (see below), whose sum is σ = 21278334. Its totient is φ = 2712960.

The previous prime is 8139203. The next prime is 8139211. The reversal of 8139204 is 4029318.

It can be written as a sum of positive squares in only one way, i.e., 6812100 + 1327104 = 2610^2 + 1152^2 .

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8139203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 12237 + ... + 12884.

Almost surely, 2^8139204 is an apocalyptic number.

It is an amenable number.

8139204 is an abundant number, since it is smaller than the sum of its proper divisors (13139130).

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

8139204 is a wasteful number, since it uses less digits than its factorization.

8139204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25137 (or 25126 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 8139204 is about 2852.9290211991. The cubic root of 8139204 is about 201.1533692446.

It can be divided in two parts, 81 and 39204, that multiplied together give a square (3175524 = 1782²).

The spelling of 8139204 in words is "eight million, one hundred thirty-nine thousand, two hundred four".