838253399 has 4 divisors (see below), whose sum is σ = 851995320. Its totient is φ = 824511480.

The previous prime is 838253387. The next prime is 838253401. The reversal of 838253399 is 993352838.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-838253399 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 (838253329) 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, 6870869 + ... + 6870990.

It is an arithmetic number, because the mean of its divisors is an integer number (212998830).

Almost surely, 2^838253399 is an apocalyptic number.

838253399 is a deficient number, since it is larger than the sum of its proper divisors (13741921).

838253399 is a wasteful number, since it uses less digits than its factorization.

838253399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13741920.

The product of its digits is 1399680, while the sum is 50.

The square root of 838253399 is about 28952.6060830454. The cubic root of 838253399 is about 942.8843796594.

The spelling of 838253399 in words is "eight hundred thirty-eight million, two hundred fifty-three thousand, three hundred ninety-nine".