398433149650 has 24 divisors (see below), whose sum is σ = 741104011620. Its totient is φ = 159369312960.

The previous prime is 398433149617. The next prime is 398433149663. The reversal of 398433149650 is 56941334893.

It can be written as a sum of positive squares in 6 ways, for example, as 247785923961 + 150647225689 = 497781^2 + 388133^2 .

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 398433149591 and 398433149600.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2761092 + ... + 2901808.

Almost surely, 2^398433149650 is an apocalyptic number.

398433149650 is a deficient number, since it is larger than the sum of its proper divisors (342670861970).

398433149650 is a wasteful number, since it uses less digits than its factorization.

398433149650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197358 (or 197353 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 55.

The spelling of 398433149650 in words is "three hundred ninety-eight billion, four hundred thirty-three million, one hundred forty-nine thousand, six hundred fifty".