3977506 has 8 divisors (see below), whose sum is σ = 6425244. Its totient is φ = 1835760.

The previous prime is 3977503. The next prime is 3977509. The reversal of 3977506 is 6057793.

It is an interprime number because it is at equal distance from previous prime (3977503) and next prime (3977509).

It can be written as a sum of positive squares in 2 ways, for example, as 3861225 + 116281 = 1965^2 + 341^2 .

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

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (3977503) 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, 76465 + ... + 76516.

Almost surely, 2^3977506 is an apocalyptic number.

3977506 is a deficient number, since it is larger than the sum of its proper divisors (2447738).

3977506 is a wasteful number, since it uses less digits than its factorization.

3977506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152996.

The product of its (nonzero) digits is 39690, while the sum is 37.

The square root of 3977506 is about 1994.3685717540. The cubic root of 3977506 is about 158.4419873474.

The spelling of 3977506 in words is "three million, nine hundred seventy-seven thousand, five hundred six".