3881404 has 6 divisors (see below), whose sum is σ = 6792464. Its totient is φ = 1940700.

The previous prime is 3881393. The next prime is 3881407. The reversal of 3881404 is 4041883.

It is a super-2 number, since 2×3881404² = 30130594022432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3881407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 485172 + ... + 485179.

Almost surely, 2^3881404 is an apocalyptic number.

It is an amenable number.

3881404 is a deficient number, since it is larger than the sum of its proper divisors (2911060).

3881404 is a wasteful number, since it uses less digits than its factorization.

3881404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970355 (or 970353 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 3881404 is about 1970.1279146289. The cubic root of 3881404 is about 157.1555114564.

The spelling of 3881404 in words is "three million, eight hundred eighty-one thousand, four hundred four".