3974155 has 4 divisors (see below), whose sum is σ = 4768992. Its totient is φ = 3179320.

The previous prime is 3974143. The next prime is 3974167. The reversal of 3974155 is 5514793.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (3974143) and next prime (3974167).

It is not a de Polignac number, because 3974155 - 2⁷ = 3974027 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3974155.

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, 397411 + ... + 397420.

It is an arithmetic number, because the mean of its divisors is an integer number (1192248).

Almost surely, 2^3974155 is an apocalyptic number.

3974155 is a deficient number, since it is larger than the sum of its proper divisors (794837).

3974155 is an equidigital number, since it uses as much as digits as its factorization.

3974155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794836.

The product of its digits is 18900, while the sum is 34.

The square root of 3974155 is about 1993.5282792075. The cubic root of 3974155 is about 158.3974797026.

The spelling of 3974155 in words is "three million, nine hundred seventy-four thousand, one hundred fifty-five".