3977970731 has 8 divisors (see below), whose sum is σ = 4565276160. Its totient is φ = 3395421288.

The previous prime is 3977970719. The next prime is 3977970761. The reversal of 3977970731 is 1370797793.

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

It is not a de Polignac number, because 3977970731 - 2¹⁴ = 3977954347 is a prime.

It is a super-2 number, since 2×3977970731² = 31648502273385348722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3977970761) 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, 1187201 + ... + 1190546.

It is an arithmetic number, because the mean of its divisors is an integer number (570659520).

Almost surely, 2^3977970731 is an apocalyptic number.

3977970731 is a deficient number, since it is larger than the sum of its proper divisors (587305429).

3977970731 is a wasteful number, since it uses less digits than its factorization.

3977970731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2377993.

The product of its (nonzero) digits is 1750329, while the sum is 53.

The square root of 3977970731 is about 63071.1560937327. The cubic root of 3977970731 is about 1584.4815788372.

The spelling of 3977970731 in words is "three billion, nine hundred seventy-seven million, nine hundred seventy thousand, seven hundred thirty-one".