398259623802 has 16 divisors (see below), whose sum is σ = 796569120000. Its totient is φ = 132744895872.

The previous prime is 398259623771. The next prime is 398259623803. The reversal of 398259623802 is 208326952893.

It is a super-2 number, since 2×398259623802² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (398259623803) 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, 1973802 + ... + 2166197.

It is an arithmetic number, because the mean of its divisors is an integer number (49785570000).

Almost surely, 2^398259623802 is an apocalyptic number.

398259623802 is an abundant number, since it is smaller than the sum of its proper divisors (398309496198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

398259623802 is a wasteful number, since it uses less digits than its factorization.

398259623802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4156037.

The product of its (nonzero) digits is 11197440, while the sum is 57.

The spelling of 398259623802 in words is "three hundred ninety-eight billion, two hundred fifty-nine million, six hundred twenty-three thousand, eight hundred two".