3949297672 has 16 divisors (see below), whose sum is σ = 7406053200. Its totient is φ = 1974350160.

The previous prime is 3949297661. The next prime is 3949297679. The reversal of 3949297672 is 2767929493.

It is not an unprimeable number, because it can be changed into a prime (3949297679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24979 + ... + 92317.

It is an arithmetic number, because the mean of its divisors is an integer number (462878325).

Almost surely, 2^3949297672 is an apocalyptic number.

It is an amenable number.

3949297672 is a deficient number, since it is larger than the sum of its proper divisors (3456755528).

3949297672 is a wasteful number, since it uses less digits than its factorization.

3949297672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74676 (or 74672 counting only the distinct ones).

The product of its digits is 10287648, while the sum is 58.

The square root of 3949297672 is about 62843.4377799305. The cubic root of 3949297672 is about 1580.6654346016.

The spelling of 3949297672 in words is "three billion, nine hundred forty-nine million, two hundred ninety-seven thousand, six hundred seventy-two".