3949447529797 has 32 divisors (see below), whose sum is σ = 5183564728320. Its totient is φ = 2915281523520.

The previous prime is 3949447529743. The next prime is 3949447529831. The reversal of 3949447529797 is 7979257449493.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3949447529797 is a prime.

It is a super-2 number, since 2×3949447529797² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3949447529717) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19051968 + ... + 19258150.

It is an arithmetic number, because the mean of its divisors is an integer number (161986397760).

Almost surely, 2^{3949447529797} is an apocalyptic number.

It is an amenable number.

3949447529797 is a deficient number, since it is larger than the sum of its proper divisors (1234117198523).

3949447529797 is a wasteful number, since it uses less digits than its factorization.

3949447529797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219313.

The product of its digits is 4320812160, while the sum is 79.

The spelling of 3949447529797 in words is "three trillion, nine hundred forty-nine billion, four hundred forty-seven million, five hundred twenty-nine thousand, seven hundred ninety-seven".