3974915 has 12 divisors (see below), whose sum is σ = 5467536. Its totient is φ = 2717568.

The previous prime is 3974911. The next prime is 3974917. The reversal of 3974915 is 5194793.

It is a happy number.

3974915 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3974915 - 2² = 3974911 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3974911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11627 + ... + 11963.

It is an arithmetic number, because the mean of its divisors is an integer number (455628).

Almost surely, 2^3974915 is an apocalyptic number.

3974915 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

3974915 is a deficient number, since it is larger than the sum of its proper divisors (1492621).

3974915 is an frugal number, since it uses more digits than its factorization.

3974915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686 (or 349 counting only the distinct ones).

The product of its digits is 34020, while the sum is 38.

The square root of 3974915 is about 1993.7188869046. The cubic root of 3974915 is about 158.4075761392.

The spelling of 3974915 in words is "three million, nine hundred seventy-four thousand, nine hundred fifteen".