3891495 has 16 divisors (see below), whose sum is σ = 6329952. Its totient is φ = 2040960.

The previous prime is 3891493. The next prime is 3891527. The reversal of 3891495 is 5941983.

It is not a de Polignac number, because 3891495 - 2¹ = 3891493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3891493) 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, 1212 + ... + 3041.

It is an arithmetic number, because the mean of its divisors is an integer number (395622).

Almost surely, 2^3891495 is an apocalyptic number.

3891495 is a deficient number, since it is larger than the sum of its proper divisors (2438457).

3891495 is a wasteful number, since it uses less digits than its factorization.

3891495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4322.

The product of its digits is 38880, while the sum is 39.

The square root of 3891495 is about 1972.6872534692. The cubic root of 3891495 is about 157.2915862657.

The spelling of 3891495 in words is "three million, eight hundred ninety-one thousand, four hundred ninety-five".