838700399 has 4 divisors (see below), whose sum is σ = 852915720. Its totient is φ = 824485080.

The previous prime is 838700377. The next prime is 838700411. The reversal of 838700399 is 993007838.

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 838700399 - 2²⁸ = 570264943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (838700339) 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, 7107572 + ... + 7107689.

It is an arithmetic number, because the mean of its divisors is an integer number (213228930).

Almost surely, 2^838700399 is an apocalyptic number.

838700399 is a deficient number, since it is larger than the sum of its proper divisors (14215321).

838700399 is a wasteful number, since it uses less digits than its factorization.

838700399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14215320.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 838700399 is about 28960.3245665514. The cubic root of 838700399 is about 943.0519480916.

The spelling of 838700399 in words is "eight hundred thirty-eight million, seven hundred thousand, three hundred ninety-nine".