3949116965 has 8 divisors (see below), whose sum is σ = 4739970840. Its totient is φ = 3158606592.

The previous prime is 3949116953. The next prime is 3949116971. The reversal of 3949116965 is 5696119493.

It is a happy number.

It is a Cunningham number, because it is equal to 62842²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 81396484 + 3867720481 = 9022^2 + 62191^2 .

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 3949116965 - 2⁶ = 3949116901 is a prime.

It is a super-2 number, since 2×3949116965² = 31191049606501622450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59864 + ... + 107153.

It is an arithmetic number, because the mean of its divisors is an integer number (592496355).

Almost surely, 2^3949116965 is an apocalyptic number.

It is an amenable number.

3949116965 is a deficient number, since it is larger than the sum of its proper divisors (790853875).

3949116965 is a wasteful number, since it uses less digits than its factorization.

3949116965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171751.

The product of its digits is 1574640, while the sum is 53.

The square root of 3949116965 is about 62842.0000079565. Note that the first 5 decimals coincide. The cubic root of 3949116965 is about 1580.6413255330.

The spelling of 3949116965 in words is "three billion, nine hundred forty-nine million, one hundred sixteen thousand, nine hundred sixty-five".