3891051 has 16 divisors (see below), whose sum is σ = 5800320. Its totient is φ = 2577960.

The previous prime is 3891049. The next prime is 3891053. The reversal of 3891051 is 1501983.

It is an interprime number because it is at equal distance from previous prime (3891049) and next prime (3891053).

It is not a de Polignac number, because 3891051 - 2¹ = 3891049 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (3891053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5356 + ... + 6038.

It is an arithmetic number, because the mean of its divisors is an integer number (362520).

Almost surely, 2^3891051 is an apocalyptic number.

3891051 is a deficient number, since it is larger than the sum of its proper divisors (1909269).

3891051 is a wasteful number, since it uses less digits than its factorization.

3891051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 903 (or 897 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 3891051 is about 1972.5747134139. The cubic root of 3891051 is about 157.2856039786.

The spelling of 3891051 in words is "three million, eight hundred ninety-one thousand, fifty-one".