398949673953 has 8 divisors (see below), whose sum is σ = 532272364288. Its totient is φ = 265796716464.

The previous prime is 398949673949. The next prime is 398949673963. The reversal of 398949673953 is 359376949893.

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

It is not a de Polignac number, because 398949673953 - 2² = 398949673949 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (398949673933) 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, 42427726 + ... + 42437127.

It is an arithmetic number, because the mean of its divisors is an integer number (66534045536).

Almost surely, 2^398949673953 is an apocalyptic number.

It is an amenable number.

398949673953 is a deficient number, since it is larger than the sum of its proper divisors (133322690335).

398949673953 is a wasteful number, since it uses less digits than its factorization.

398949673953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84866423.

The product of its digits is 1190427840, while the sum is 75.

The spelling of 398949673953 in words is "three hundred ninety-eight billion, nine hundred forty-nine million, six hundred seventy-three thousand, nine hundred fifty-three".