1398254939 has 8 divisors (see below), whose sum is σ = 1494636192. Its totient is φ = 1304839360.

The previous prime is 1398254929. The next prime is 1398254999. The reversal of 1398254939 is 9394528931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1398254939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1398254929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 740444 + ... + 742329.

It is an arithmetic number, because the mean of its divisors is an integer number (186829524).

Almost surely, 2^1398254939 is an apocalyptic number.

1398254939 is a deficient number, since it is larger than the sum of its proper divisors (96381253).

1398254939 is a wasteful number, since it uses less digits than its factorization.

1398254939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1482837.

The product of its digits is 2099520, while the sum is 53.

The square root of 1398254939 is about 37393.2472379707. The cubic root of 1398254939 is about 1118.2239439578.

It can be divided in two parts, 13982 and 54939, that added together give a cube (68921 = 41³).

The spelling of 1398254939 in words is "one billion, three hundred ninety-eight million, two hundred fifty-four thousand, nine hundred thirty-nine".