3988913 has 4 divisors (see below), whose sum is σ = 4162368. Its totient is φ = 3815460.

The previous prime is 3988909. The next prime is 3988961. The reversal of 3988913 is 3198893.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3988913 - 2² = 3988909 is a prime.

It is a super-2 number, since 2×3988913² = 31822853843138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3988903) 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, 86693 + ... + 86738.

It is an arithmetic number, because the mean of its divisors is an integer number (1040592).

Almost surely, 2^3988913 is an apocalyptic number.

It is an amenable number.

3988913 is a deficient number, since it is larger than the sum of its proper divisors (173455).

3988913 is a wasteful number, since it uses less digits than its factorization.

3988913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173454.

The product of its digits is 46656, while the sum is 41.

The square root of 3988913 is about 1997.2263266841. The cubic root of 3988913 is about 158.5933068549.

The spelling of 3988913 in words is "three million, nine hundred eighty-eight thousand, nine hundred thirteen".