398256970501 has 8 divisors (see below), whose sum is σ = 430407645920. Its totient is φ = 366322798512.

The previous prime is 398256970493. The next prime is 398256970537. The reversal of 398256970501 is 105079652893.

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 398256970501 - 2³ = 398256970493 is a prime.

It is a super-2 number, since 2×398256970501² (a number of 24 digits) 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 (398256970541) 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, 54122031 + ... + 54129388.

It is an arithmetic number, because the mean of its divisors is an integer number (53800955740).

Almost surely, 2^398256970501 is an apocalyptic number.

It is an amenable number.

398256970501 is a deficient number, since it is larger than the sum of its proper divisors (32150675419).

398256970501 is a wasteful number, since it uses less digits than its factorization.

398256970501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108251715.

The product of its (nonzero) digits is 4082400, while the sum is 55.

The spelling of 398256970501 in words is "three hundred ninety-eight billion, two hundred fifty-six million, nine hundred seventy thousand, five hundred one".