3903931 has 8 divisors (see below), whose sum is σ = 4167504. Its totient is φ = 3644160.

The previous prime is 3903929. The next prime is 3903937. The reversal of 3903931 is 1393093.

It is a happy number.

3903931 is nontrivially palindromic in base 4.

3903931 is an esthetic number in base 4, because in such base its adjacent digits differ by 1.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3903931 - 2¹ = 3903929 is a prime.

It is a super-2 number, since 2×3903931² = 30481354505522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3903931.

It is not an unprimeable number, because it can be changed into a prime (3903937) 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, 1351 + ... + 3103.

It is an arithmetic number, because the mean of its divisors is an integer number (520938).

Almost surely, 2^3903931 is an apocalyptic number.

3903931 is a deficient number, since it is larger than the sum of its proper divisors (263573).

3903931 is a wasteful number, since it uses less digits than its factorization.

3903931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1901.

The product of its (nonzero) digits is 2187, while the sum is 28.

The square root of 3903931 is about 1975.8367847573. The cubic root of 3903931 is about 157.4589596605.

The spelling of 3903931 in words is "three million, nine hundred three thousand, nine hundred thirty-one".