402003697 has 2 divisors, whose sum is σ = 402003698. Its totient is φ = 402003696.

The previous prime is 402003659. The next prime is 402003731. The reversal of 402003697 is 796300204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201526416 + 200477281 = 14196^2 + 14159^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402003697 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (402003617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201001848 + 201001849.

It is an arithmetic number, because the mean of its divisors is an integer number (201001849).

Almost surely, 2^402003697 is an apocalyptic number.

It is an amenable number.

402003697 is a deficient number, since it is larger than the sum of its proper divisors (1).

402003697 is an equidigital number, since it uses as much as digits as its factorization.

402003697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 402003697 is about 20050.0298503518. The cubic root of 402003697 is about 738.0345316451.

The spelling of 402003697 in words is "four hundred two million, three thousand, six hundred ninety-seven".