3949997 has 8 divisors (see below), whose sum is σ = 4143744. Its totient is φ = 3758128.

The previous prime is 3949969. The next prime is 3950029. The reversal of 3949997 is 7999493.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3949997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3949097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5723 + ... + 6375.

It is an arithmetic number, because the mean of its divisors is an integer number (517968).

Almost surely, 2^3949997 is an apocalyptic number.

It is an amenable number.

3949997 is a deficient number, since it is larger than the sum of its proper divisors (193747).

3949997 is a wasteful number, since it uses less digits than its factorization.

3949997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939.

The product of its digits is 551124, while the sum is 50.

The square root of 3949997 is about 1987.4599367031. The cubic root of 3949997 is about 158.0758728688.

The spelling of 3949997 in words is "three million, nine hundred forty-nine thousand, nine hundred ninety-seven".