398475000 has 576 divisors, whose sum is σ = 1754887680. Its totient is φ = 79200000.

The previous prime is 398474987. The next prime is 398475001. The reversal of 398475000 is 574893.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398475001) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 17324989 + ... + 17325011.

It is an arithmetic number, because the mean of its divisors is an integer number (3046680).

Almost surely, 2^398475000 is an apocalyptic number.

398475000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 398475000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (877443840).

398475000 is an abundant number, since it is smaller than the sum of its proper divisors (1356412680).

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

398475000 is a wasteful number, since it uses less digits than its factorization.

398475000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78 (or 51 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 398475000 is about 19961.8385926748. The cubic root of 398475000 is about 735.8687492404.

The spelling of 398475000 in words is "three hundred ninety-eight million, four hundred seventy-five thousand".