3997955 has 8 divisors (see below), whose sum is σ = 5166672. Its totient is φ = 2952288.

The previous prime is 3997933. The next prime is 3997963. The reversal of 3997955 is 5597993.

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

It is a cyclic number.

It is not a de Polignac number, because 3997955 - 2⁶ = 3997891 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30689 + ... + 30818.

It is an arithmetic number, because the mean of its divisors is an integer number (645834).

Almost surely, 2^3997955 is an apocalyptic number.

3997955 is a deficient number, since it is larger than the sum of its proper divisors (1168717).

3997955 is a wasteful number, since it uses less digits than its factorization.

3997955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61525.

The product of its digits is 382725, while the sum is 47.

The square root of 3997955 is about 1999.4886846392. The cubic root of 3997955 is about 158.7130486258.

The spelling of 3997955 in words is "three million, nine hundred ninety-seven thousand, nine hundred fifty-five".