1590397 has 2 divisors, whose sum is σ = 1590398. Its totient is φ = 1590396.

The previous prime is 1590383. The next prime is 1590403. The reversal of 1590397 is 7930951.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1153476 + 436921 = 1074^2 + 661^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1590397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1590317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 795198 + 795199.

It is an arithmetic number, because the mean of its divisors is an integer number (795199).

2^1590397 is an apocalyptic number.

It is an amenable number.

1590397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1590397 is an equidigital number, since it uses as much as digits as its factorization.

1590397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8505, while the sum is 34.

The square root of 1590397 is about 1261.1094322064. The cubic root of 1590397 is about 116.7262453065.

The spelling of 1590397 in words is "one million, five hundred ninety thousand, three hundred ninety-seven".