398919018743 has 8 divisors (see below), whose sum is σ = 455911411488. Its totient is φ = 341927616384.

The previous prime is 398919018677. The next prime is 398919018763. The reversal of 398919018743 is 347810919893.

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 398919018743 - 2¹⁶ = 398918953207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398919018763) 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, 1116755 + ... + 1430027.

It is an arithmetic number, because the mean of its divisors is an integer number (56988926436).

Almost surely, 2^398919018743 is an apocalyptic number.

398919018743 is a deficient number, since it is larger than the sum of its proper divisors (56992392745).

398919018743 is a wasteful number, since it uses less digits than its factorization.

398919018743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495193.

The product of its (nonzero) digits is 11757312, while the sum is 62.

The spelling of 398919018743 in words is "three hundred ninety-eight billion, nine hundred nineteen million, eighteen thousand, seven hundred forty-three".