400609598 has 4 divisors (see below), whose sum is σ = 600914400. Its totient is φ = 200304798.

The previous prime is 400609591. The next prime is 400609613. The reversal of 400609598 is 895906004.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400609591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100152398 + ... + 100152401.

It is an arithmetic number, because the mean of its divisors is an integer number (150228600).

Almost surely, 2^400609598 is an apocalyptic number.

400609598 is a deficient number, since it is larger than the sum of its proper divisors (200304802).

400609598 is a wasteful number, since it uses less digits than its factorization.

400609598 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200304801.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 400609598 is about 20015.2341480184. The cubic root of 400609598 is about 737.1804061192.

The spelling of 400609598 in words is "four hundred million, six hundred nine thousand, five hundred ninety-eight".