398775060 has 36 divisors (see below), whose sum is σ = 1209618228. Its totient is φ = 106339968.

The previous prime is 398775053. The next prime is 398775101. The reversal of 398775060 is 60577893.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 243921924 + 154853136 = 15618^2 + 12444^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 398774997 and 398775015.

It is a congruent number.

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, 1107529 + ... + 1107888.

Almost surely, 2^398775060 is an apocalyptic number.

398775060 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

398775060 is an abundant number, since it is smaller than the sum of its proper divisors (810843168).

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

398775060 is a wasteful number, since it uses less digits than its factorization.

398775060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2215432 (or 2215427 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 398775060 is about 19969.3530190640. The cubic root of 398775060 is about 736.0534110774.

The spelling of 398775060 in words is "three hundred ninety-eight million, seven hundred seventy-five thousand, sixty".