5129639 has 4 divisors (see below), whose sum is σ = 5399640. Its totient is φ = 4859640.

The previous prime is 5129617. The next prime is 5129647. The reversal of 5129639 is 9369215.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5129639 - 2¹² = 5125543 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5129599 and 5129608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5129659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134972 + ... + 135009.

It is an arithmetic number, because the mean of its divisors is an integer number (1349910).

Almost surely, 2^5129639 is an apocalyptic number.

5129639 is a deficient number, since it is larger than the sum of its proper divisors (270001).

5129639 is a wasteful number, since it uses less digits than its factorization.

5129639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270000.

The product of its digits is 14580, while the sum is 35.

The square root of 5129639 is about 2264.8706364824. The cubic root of 5129639 is about 172.4628667533.

The spelling of 5129639 in words is "five million, one hundred twenty-nine thousand, six hundred thirty-nine".