398451474 has 96 divisors (see below), whose sum is σ = 981227520. Its totient is φ = 120621312.

The previous prime is 398451433. The next prime is 398451499. The reversal of 398451474 is 474154893.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 238767 + ... + 240429.

It is an arithmetic number, because the mean of its divisors is an integer number (10221120).

Almost surely, 2^398451474 is an apocalyptic number.

398451474 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 398451474, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (490613760).

398451474 is an abundant number, since it is smaller than the sum of its proper divisors (582776046).

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

398451474 is a wasteful number, since it uses less digits than its factorization.

398451474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1726 (or 1714 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 398451474 is about 19961.2493095998. The cubic root of 398451474 is about 735.8542670362.

The spelling of 398451474 in words is "three hundred ninety-eight million, four hundred fifty-one thousand, four hundred seventy-four".