3928870977 has 8 divisors (see below), whose sum is σ = 5514204960. Its totient is φ = 2481392160.

The previous prime is 3928870949. The next prime is 3928870991. The reversal of 3928870977 is 7790788293.

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

It is not a de Polignac number, because 3928870977 - 2⁸ = 3928870721 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3928870977.

It is not an unprimeable number, because it can be changed into a prime (3928870927) 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, 34463724 + ... + 34463837.

It is an arithmetic number, because the mean of its divisors is an integer number (689275620).

Almost surely, 2^3928870977 is an apocalyptic number.

It is an amenable number.

3928870977 is a deficient number, since it is larger than the sum of its proper divisors (1585333983).

3928870977 is a wasteful number, since it uses less digits than its factorization.

3928870977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68927583.

The product of its (nonzero) digits is 10668672, while the sum is 60.

The square root of 3928870977 is about 62680.7065770640. The cubic root of 3928870977 is about 1577.9355316695.

The spelling of 3928870977 in words is "three billion, nine hundred twenty-eight million, eight hundred seventy thousand, nine hundred seventy-seven".