3900531 has 8 divisors (see below), whose sum is σ = 5506704. Its totient is φ = 2447360.

The previous prime is 3900517. The next prime is 3900563. The reversal of 3900531 is 1350093.

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 3900531 - 2⁵ = 3900499 is a prime.

It is a super-2 number, since 2×3900531² = 30428284163922, which contains 22 as substring.

It is a plaindrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 3900498 and 3900507.

It is not an unprimeable number, because it can be changed into a prime (3900581) 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, 38190 + ... + 38291.

It is an arithmetic number, because the mean of its divisors is an integer number (688338).

Almost surely, 2^3900531 is an apocalyptic number.

3900531 is a deficient number, since it is larger than the sum of its proper divisors (1606173).

3900531 is a wasteful number, since it uses less digits than its factorization.

3900531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76501.

The product of its (nonzero) digits is 405, while the sum is 21.

The square root of 3900531 is about 1974.9762023883. The cubic root of 3900531 is about 157.4132351539.

The spelling of 3900531 in words is "three million, nine hundred thousand, five hundred thirty-one".