3999497 has 2 divisors, whose sum is σ = 3999498. Its totient is φ = 3999496.

The previous prime is 3999491. The next prime is 3999511. The reversal of 3999497 is 7949993.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3644281 + 355216 = 1909^2 + 596^2 .

It is a cyclic number.

It is not a de Polignac number, because 3999497 - 2¹⁶ = 3933961 is a prime.

It is not a weakly prime, because it can be changed into another prime (3999491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1999748 + 1999749.

It is an arithmetic number, because the mean of its divisors is an integer number (1999749).

Almost surely, 2^3999497 is an apocalyptic number.

It is an amenable number.

3999497 is a deficient number, since it is larger than the sum of its proper divisors (1).

3999497 is an equidigital number, since it uses as much as digits as its factorization.

3999497 is an evil number, because the sum of its binary digits is even.

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

The square root of 3999497 is about 1999.8742460465. The cubic root of 3999497 is about 158.7334510618.

The spelling of 3999497 in words is "three million, nine hundred ninety-nine thousand, four hundred ninety-seven".