398088744628 has 6 divisors (see below), whose sum is σ = 696655303106. Its totient is φ = 199044372312.

The previous prime is 398088744611. The next prime is 398088744661. The reversal of 398088744628 is 826447880893.

It can be written as a sum of positive squares in only one way, i.e., 388305952164 + 9782792464 = 623142^2 + 98908^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49761093075 + ... + 49761093082.

Almost surely, 2^398088744628 is an apocalyptic number.

It is an amenable number.

398088744628 is a deficient number, since it is larger than the sum of its proper divisors (298566558478).

398088744628 is a wasteful number, since it uses less digits than its factorization.

398088744628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99522186161 (or 99522186159 counting only the distinct ones).

The product of its (nonzero) digits is 148635648, while the sum is 67.

The spelling of 398088744628 in words is "three hundred ninety-eight billion, eighty-eight million, seven hundred forty-four thousand, six hundred twenty-eight".