1398902959 has 2 divisors, whose sum is σ = 1398902960. Its totient is φ = 1398902958.

The previous prime is 1398902929. The next prime is 1398902977. The reversal of 1398902959 is 9592098931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1398902959 - 2⁵ = 1398902927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1398902929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 699451479 + 699451480.

It is an arithmetic number, because the mean of its divisors is an integer number (699451480).

Almost surely, 2^1398902959 is an apocalyptic number.

1398902959 is a deficient number, since it is larger than the sum of its proper divisors (1).

1398902959 is an equidigital number, since it uses as much as digits as its factorization.

1398902959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1574640, while the sum is 55.

The square root of 1398902959 is about 37401.9111677465. The cubic root of 1398902959 is about 1118.3966639069.

It can be divided in two parts, 139 and 8902959, that added together give a palindrome (8903098).

The spelling of 1398902959 in words is "one billion, three hundred ninety-eight million, nine hundred two thousand, nine hundred fifty-nine".