398931244009 has 8 divisors (see below), whose sum is σ = 400263514560. Its totient is φ = 397599291600.

The previous prime is 398931244007. The next prime is 398931244021. The reversal of 398931244009 is 900442139893.

It is a happy number.

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 398931244009 - 2¹ = 398931244007 is a prime.

It is a super-2 number, since 2×398931244009² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (398931244003) 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, 2580519 + ... + 2730739.

It is an arithmetic number, because the mean of its divisors is an integer number (50032939320).

Almost surely, 2^398931244009 is an apocalyptic number.

It is an amenable number.

398931244009 is a deficient number, since it is larger than the sum of its proper divisors (1332270551).

398931244009 is a wasteful number, since it uses less digits than its factorization.

398931244009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159071.

The product of its (nonzero) digits is 1679616, while the sum is 52.

The spelling of 398931244009 in words is "three hundred ninety-eight billion, nine hundred thirty-one million, two hundred forty-four thousand, nine".