3998497 has 2 divisors, whose sum is σ = 3998498. Its totient is φ = 3998496.

The previous prime is 3998461. The next prime is 3998521. The reversal of 3998497 is 7948993.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3530641 + 467856 = 1879^2 + 684^2 .

It is a cyclic number.

It is not a de Polignac number, because 3998497 - 2⁷ = 3998369 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3998497.

It is not a weakly prime, because it can be changed into another prime (3999497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1999248 + 1999249.

It is an arithmetic number, because the mean of its divisors is an integer number (1999249).

Almost surely, 2^3998497 is an apocalyptic number.

It is an amenable number.

3998497 is a deficient number, since it is larger than the sum of its proper divisors (1).

3998497 is an equidigital number, since it uses as much as digits as its factorization.

3998497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 49.

The square root of 3998497 is about 1999.6242146964. The cubic root of 3998497 is about 158.7202205079.

The spelling of 3998497 in words is "three million, nine hundred ninety-eight thousand, four hundred ninety-seven".