3971914 has 16 divisors (see below), whose sum is σ = 6351048. Its totient is φ = 1856512.

The previous prime is 3971911. The next prime is 3971917. The reversal of 3971914 is 4191793.

3971914 = 25² + 26² + ... + 228².

It is an interprime number because it is at equal distance from previous prime (3971911) and next prime (3971917).

It can be written as a sum of positive squares in 4 ways, for example, as 3900625 + 71289 = 1975^2 + 267^2 .

It is a super-2 number, since 2×3971914² = 31552201646792, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a self number, because there is not a number n which added to its sum of digits gives 3971914.

It is not an unprimeable number, because it can be changed into a prime (3971911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6402 + ... + 6994.

Almost surely, 2^3971914 is an apocalyptic number.

3971914 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

3971914 is a deficient number, since it is larger than the sum of its proper divisors (2379134).

3971914 is a wasteful number, since it uses less digits than its factorization.

3971914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809.

The product of its digits is 6804, while the sum is 34.

The square root of 3971914 is about 1992.9661311723. The cubic root of 3971914 is about 158.3677010038.

The spelling of 3971914 in words is "three million, nine hundred seventy-one thousand, nine hundred fourteen".