3906251 has 4 divisors (see below), whose sum is σ = 4076112. Its totient is φ = 3736392.

The previous prime is 3906247. The next prime is 3906263. The reversal of 3906251 is 1526093.

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 3906251 - 2² = 3906247 is a prime.

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 3906251.

It is not an unprimeable number, because it can be changed into a prime (3906151) 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, 84896 + ... + 84941.

It is an arithmetic number, because the mean of its divisors is an integer number (1019028).

Almost surely, 2^3906251 is an apocalyptic number.

3906251 is a deficient number, since it is larger than the sum of its proper divisors (169861).

3906251 is a wasteful number, since it uses less digits than its factorization.

3906251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169860.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 3906251 is about 1976.4237905874. The cubic root of 3906251 is about 157.4901446760.

The spelling of 3906251 in words is "three million, nine hundred six thousand, two hundred fifty-one".