3977530 has 8 divisors (see below), whose sum is σ = 7159572. Its totient is φ = 1591008.

The previous prime is 3977527. The next prime is 3977549. The reversal of 3977530 is 357793.

It can be written as a sum of positive squares in 2 ways, for example, as 3798601 + 178929 = 1949^2 + 423^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198867 + ... + 198886.

Almost surely, 2^3977530 is an apocalyptic number.

3977530 is a deficient number, since it is larger than the sum of its proper divisors (3182042).

3977530 is a wasteful number, since it uses less digits than its factorization.

3977530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397760.

The product of its (nonzero) digits is 19845, while the sum is 34.

The square root of 3977530 is about 1994.3745886869. The cubic root of 3977530 is about 158.4423060228.

The spelling of 3977530 in words is "three million, nine hundred seventy-seven thousand, five hundred thirty".