3949287 has 16 divisors (see below), whose sum is σ = 5617152. Its totient is φ = 2459520.

The previous prime is 3949273. The next prime is 3949291. The reversal of 3949287 is 7829493.

It is not a de Polignac number, because 3949287 - 2⁴ = 3949271 is a prime.

It is an Ulam number.

3949287 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3949217) 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, 10578 + ... + 10944.

It is an arithmetic number, because the mean of its divisors is an integer number (351072).

Almost surely, 2^3949287 is an apocalyptic number.

3949287 is a deficient number, since it is larger than the sum of its proper divisors (1667865).

3949287 is a wasteful number, since it uses less digits than its factorization.

3949287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598.

The product of its digits is 108864, while the sum is 42.

The square root of 3949287 is about 1987.2813087231. The cubic root of 3949287 is about 158.0664010815.

The spelling of 3949287 in words is "three million, nine hundred forty-nine thousand, two hundred eighty-seven".