3907381 has 4 divisors (see below), whose sum is σ = 3921472. Its totient is φ = 3893292.

The previous prime is 3907363. The next prime is 3907403. The reversal of 3907381 is 1837093.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1837093 = 1291 ⋅1423.

It is a cyclic number.

It is not a de Polignac number, because 3907381 - 2⁵ = 3907349 is a prime.

It is a super-2 number, since 2×3907381² = 30535252558322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3907361) 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, 6621 + ... + 7186.

It is an arithmetic number, because the mean of its divisors is an integer number (980368).

Almost surely, 2^3907381 is an apocalyptic number.

It is an amenable number.

3907381 is a deficient number, since it is larger than the sum of its proper divisors (14091).

3907381 is a wasteful number, since it uses less digits than its factorization.

3907381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14090.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 3907381 is about 1976.7096397802. The cubic root of 3907381 is about 157.5053294577.

The spelling of 3907381 in words is "three million, nine hundred seven thousand, three hundred eighty-one".