6139881 has 24 divisors (see below), whose sum is σ = 10037664. Its totient is φ = 3719520.

The previous prime is 6139871. The next prime is 6139883. The reversal of 6139881 is 1889316.

It is not a de Polignac number, because 6139881 - 2⁵ = 6139849 is a prime.

It is a super-2 number, since 2×6139881² = 75396277388322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6139883) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1525 + ... + 3821.

It is an arithmetic number, because the mean of its divisors is an integer number (418236).

Almost surely, 2^6139881 is an apocalyptic number.

It is an amenable number.

6139881 is a deficient number, since it is larger than the sum of its proper divisors (3897783).

6139881 is a wasteful number, since it uses less digits than its factorization.

6139881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2323 (or 2311 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 6139881 is about 2477.8783263106. The cubic root of 6139881 is about 183.1133401624.

The spelling of 6139881 in words is "six million, one hundred thirty-nine thousand, eight hundred eighty-one".