8139764 has 6 divisors (see below), whose sum is σ = 14244594. Its totient is φ = 4069880.

The previous prime is 8139743. The next prime is 8139767. The reversal of 8139764 is 4679318.

It can be written as a sum of positive squares in only one way, i.e., 7344100 + 795664 = 2710^2 + 892^2 .

It is a d-powerful number, because it can be written as 8³ + 1 + 3¹³ + 9⁷ + 7⁵ + 6⁸ + 4⁸ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8139767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1017467 + ... + 1017474.

It is an arithmetic number, because the mean of its divisors is an integer number (2374099).

Almost surely, 2^8139764 is an apocalyptic number.

It is an amenable number.

8139764 is a deficient number, since it is larger than the sum of its proper divisors (6104830).

8139764 is a wasteful number, since it uses less digits than its factorization.

8139764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2034945 (or 2034943 counting only the distinct ones).

The product of its digits is 36288, while the sum is 38.

The square root of 8139764 is about 2853.0271642590. The cubic root of 8139764 is about 201.1579824436.

The spelling of 8139764 in words is "eight million, one hundred thirty-nine thousand, seven hundred sixty-four".