939643969 has 8 divisors (see below), whose sum is σ = 1025298720. Its totient is φ = 854028000.

The previous prime is 939643951. The next prime is 939643973. The reversal of 939643969 is 969346939.

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

It is a cyclic number.

It is not a de Polignac number, because 939643969 - 2⁹ = 939643457 is a prime.

It is a super-2 number, since 2×939643969² = 1765861576956145922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (939643919) 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, 68269 + ... + 80869.

It is an arithmetic number, because the mean of its divisors is an integer number (128162340).

Almost surely, 2^939643969 is an apocalyptic number.

It is an amenable number.

939643969 is a deficient number, since it is larger than the sum of its proper divisors (85654751).

939643969 is a wasteful number, since it uses less digits than its factorization.

939643969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19391.

The product of its digits is 8503056, while the sum is 58.

The square root of 939643969 is about 30653.6126582170. The cubic root of 939643969 is about 979.4624182676.

The spelling of 939643969 in words is "nine hundred thirty-nine million, six hundred forty-three thousand, nine hundred sixty-nine".