398151340 has 12 divisors (see below), whose sum is σ = 836117856. Its totient is φ = 159260528.

The previous prime is 398151329. The next prime is 398151343. The reversal of 398151340 is 43151893.

It is a junction number, because it is equal to n+sod(n) for n = 398151296 and 398151305.

It is not an unprimeable number, because it can be changed into a prime (398151343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9953764 + ... + 9953803.

It is an arithmetic number, because the mean of its divisors is an integer number (69676488).

Almost surely, 2^398151340 is an apocalyptic number.

It is an amenable number.

398151340 is an abundant number, since it is smaller than the sum of its proper divisors (437966516).

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

398151340 is a wasteful number, since it uses less digits than its factorization.

398151340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19907576 (or 19907574 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 398151340 is about 19953.7299771246. The cubic root of 398151340 is about 735.6694596211.

The spelling of 398151340 in words is "three hundred ninety-eight million, one hundred fifty-one thousand, three hundred forty".