5139025969 has 63 divisors (see below), whose sum is σ = 6955223961. Its totient is φ = 3793676040.

The previous prime is 5139025963. The next prime is 5139025979. The reversal of 5139025969 is 9695209315.

The square root of 5139025969 is 71687.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 5139025969 - 2³¹ = 2991542321 is a prime.

It is a super-2 number, since 2×5139025969² = 52819175820112777922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (5139025963) by changing a digit.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 270475042 + ... + 270475060.

Almost surely, 2^5139025969 is an apocalyptic number.

5139025969 is the 71687-th square number.

5139025969 is the 35844-th centered octagonal number.

It is an amenable number.

5139025969 is a deficient number, since it is larger than the sum of its proper divisors (1816197992).

5139025969 is an frugal number, since it uses more digits than its factorization.

5139025969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102 (or 37 counting only the distinct ones).

The product of its (nonzero) digits is 656100, while the sum is 49.

The cubic root of 5139025969 is about 1725.6800196740.

Multiplying 5139025969 by its sum of digits (49), we get a square (251812272481 = 501809²).

5139025969 divided by its sum of digits (49) gives a square (104878081 = 10241²).

The spelling of 5139025969 in words is "five billion, one hundred thirty-nine million, twenty-five thousand, nine hundred sixty-nine".