1398434039 has 8 divisors (see below), whose sum is σ = 1422292608. Its totient is φ = 1374775480.

The previous prime is 1398434033. The next prime is 1398434041. The reversal of 1398434039 is 9304348931.

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

It is a cyclic number.

It is not a de Polignac number, because 1398434039 - 2²⁰ = 1397385463 is a prime.

It is a super-2 number, since 2×1398434039² = 3911235522867707042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1398434033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35867 + ... + 63900.

It is an arithmetic number, because the mean of its divisors is an integer number (177786576).

Almost surely, 2^1398434039 is an apocalyptic number.

1398434039 is a deficient number, since it is larger than the sum of its proper divisors (23858569).

1398434039 is a wasteful number, since it uses less digits than its factorization.

1398434039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100005.

The product of its (nonzero) digits is 279936, while the sum is 44.

The square root of 1398434039 is about 37395.6419787119. The cubic root of 1398434039 is about 1118.2716856947.

The spelling of 1398434039 in words is "one billion, three hundred ninety-eight million, four hundred thirty-four thousand, thirty-nine".