839149399 has 6 divisors (see below), whose sum is σ = 922370960. Its totient is φ = 762862980.

The previous prime is 839149391. The next prime is 839149417. The reversal of 839149399 is 993941938.

It is not a de Polignac number, because 839149399 - 2³ = 839149391 is a prime.

It is a super-2 number, since 2×839149399² = 1408343427684122402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (839149391) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3467439 + ... + 3467680.

Almost surely, 2^839149399 is an apocalyptic number.

839149399 is a deficient number, since it is larger than the sum of its proper divisors (83221561).

839149399 is a wasteful number, since it uses less digits than its factorization.

839149399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6935141 (or 6935130 counting only the distinct ones).

The product of its digits is 1889568, while the sum is 55.

The square root of 839149399 is about 28968.0755142622. The cubic root of 839149399 is about 943.2202063422.

The spelling of 839149399 in words is "eight hundred thirty-nine million, one hundred forty-nine thousand, three hundred ninety-nine".