6239981 has 8 divisors (see below), whose sum is σ = 6830784. Its totient is φ = 5653120.

The previous prime is 6239957. The next prime is 6240001. The reversal of 6239981 is 1899326.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6239981 - 2²² = 2045677 is a prime.

It is a super-2 number, since 2×6239981² = 77874725760722, 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 (6239921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3080 + ... + 4686.

It is an arithmetic number, because the mean of its divisors is an integer number (853848).

Almost surely, 2^6239981 is an apocalyptic number.

It is an amenable number.

6239981 is a deficient number, since it is larger than the sum of its proper divisors (590803).

6239981 is a wasteful number, since it uses less digits than its factorization.

6239981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1971.

The product of its digits is 23328, while the sum is 38.

The square root of 6239981 is about 2497.9953963128. The cubic root of 6239981 is about 184.1030947932.

The spelling of 6239981 in words is "six million, two hundred thirty-nine thousand, nine hundred eighty-one".