3902971 has 4 divisors (see below), whose sum is σ = 3909952. Its totient is φ = 3895992.

The previous prime is 3902929. The next prime is 3903001. The reversal of 3902971 is 1792093.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3902971 - 2²¹ = 1805819 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3902071) 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, 2571 + ... + 3796.

It is an arithmetic number, because the mean of its divisors is an integer number (977488).

Almost surely, 2^3902971 is an apocalyptic number.

3902971 is a deficient number, since it is larger than the sum of its proper divisors (6981).

3902971 is an equidigital number, since it uses as much as digits as its factorization.

3902971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6980.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 3902971 is about 1975.5938347747. The cubic root of 3902971 is about 157.4460519022.

The spelling of 3902971 in words is "three million, nine hundred two thousand, nine hundred seventy-one".