3977397 has 8 divisors (see below), whose sum is σ = 5892480. Its totient is φ = 2651580.

The previous prime is 3977387. The next prime is 3977401. The reversal of 3977397 is 7937793.

It is not a de Polignac number, because 3977397 - 2⁴ = 3977381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3977317) 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, 73629 + ... + 73682.

It is an arithmetic number, because the mean of its divisors is an integer number (736560).

Almost surely, 2^3977397 is an apocalyptic number.

It is an amenable number.

3977397 is a deficient number, since it is larger than the sum of its proper divisors (1915083).

3977397 is a wasteful number, since it uses less digits than its factorization.

3977397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147320 (or 147314 counting only the distinct ones).

The product of its digits is 250047, while the sum is 45.

The square root of 3977397 is about 1994.3412446219. The cubic root of 3977397 is about 158.4405400138.

The spelling of 3977397 in words is "three million, nine hundred seventy-seven thousand, three hundred ninety-seven".