3977906 has 8 divisors (see below), whose sum is σ = 5981040. Its totient is φ = 1984228.

The previous prime is 3977903. The next prime is 3977921. The reversal of 3977906 is 6097793.

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

It is a super-2 number, since 2×3977906² = 31647472289672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3977903) 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, 1196 + ... + 3063.

It is an arithmetic number, because the mean of its divisors is an integer number (747630).

Almost surely, 2^3977906 is an apocalyptic number.

3977906 is a deficient number, since it is larger than the sum of its proper divisors (2003134).

3977906 is a wasteful number, since it uses less digits than its factorization.

3977906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4728.

The product of its (nonzero) digits is 71442, while the sum is 41.

The square root of 3977906 is about 1994.4688515993. The cubic root of 3977906 is about 158.4472984369.

The spelling of 3977906 in words is "three million, nine hundred seventy-seven thousand, nine hundred six".