3994497 has 12 divisors (see below), whose sum is σ = 6213844. Its totient is φ = 2458080.

The previous prime is 3994493. The next prime is 3994499. The reversal of 3994497 is 7944993.

It can be written as a sum of positive squares in 2 ways, for example, as 1252161 + 2742336 = 1119^2 + 1656^2 .

It is not a de Polignac number, because 3994497 - 2² = 3994493 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3994493) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16954 + ... + 17187.

Almost surely, 2^3994497 is an apocalyptic number.

It is an amenable number.

3994497 is a deficient number, since it is larger than the sum of its proper divisors (2219347).

3994497 is a wasteful number, since it uses less digits than its factorization.

3994497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34160 (or 34157 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 3994497 is about 1998.6237765022. The cubic root of 3994497 is about 158.6672762219.

The spelling of 3994497 in words is "three million, nine hundred ninety-four thousand, four hundred ninety-seven".