3977923829 has 4 divisors (see below), whose sum is σ = 4339553280. Its totient is φ = 3616294380.

The previous prime is 3977923777. The next prime is 3977923843. The reversal of 3977923829 is 9283297793.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3977923829 - 2¹² = 3977919733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3977923889) 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, 180814709 + ... + 180814730.

It is an arithmetic number, because the mean of its divisors is an integer number (1084888320).

Almost surely, 2^3977923829 is an apocalyptic number.

It is an amenable number.

3977923829 is a deficient number, since it is larger than the sum of its proper divisors (361629451).

3977923829 is a wasteful number, since it uses less digits than its factorization.

3977923829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361629450.

The product of its digits is 10287648, while the sum is 59.

The square root of 3977923829 is about 63070.7842744959. The cubic root of 3977923829 is about 1584.4753515711.

The spelling of 3977923829 in words is "three billion, nine hundred seventy-seven million, nine hundred twenty-three thousand, eight hundred twenty-nine".