5209638377 has 4 divisors (see below), whose sum is σ = 5209833216. Its totient is φ = 5209443540.

The previous prime is 5209638353. The next prime is 5209638397. The reversal of 5209638377 is 7738369025.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5209638377 - 2⁸ = 5209638121 is a prime.

It is a super-2 number, since 2×5209638377² = 54280664038222388258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5209638307) 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, 49433 + ... + 113414.

It is an arithmetic number, because the mean of its divisors is an integer number (1302458304).

Almost surely, 2^5209638377 is an apocalyptic number.

It is an amenable number.

5209638377 is a deficient number, since it is larger than the sum of its proper divisors (194839).

5209638377 is a wasteful number, since it uses less digits than its factorization.

5209638377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194838.

The product of its (nonzero) digits is 1905120, while the sum is 50.

The square root of 5209638377 is about 72177.8246901360. The cubic root of 5209638377 is about 1733.5479524643.

The spelling of 5209638377 in words is "five billion, two hundred nine million, six hundred thirty-eight thousand, three hundred seventy-seven".