609898400 has 36 divisors (see below), whose sum is σ = 1488916422. Its totient is φ = 243959040.

The previous prime is 609898397. The next prime is 609898439. The reversal of 609898400 is 4898906.

It can be written as a sum of positive squares in 3 ways, for example, as 373107856 + 236790544 = 19316^2 + 15388^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 380387 + ... + 381986.

Almost surely, 2^609898400 is an apocalyptic number.

It is an amenable number.

609898400 is an abundant number, since it is smaller than the sum of its proper divisors (879018022).

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

609898400 is a wasteful number, since it uses less digits than its factorization.

609898400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762393 (or 762380 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 609898400 is about 24696.1211529260. The cubic root of 609898400 is about 848.0455208743.

The spelling of 609898400 in words is "six hundred nine million, eight hundred ninety-eight thousand, four hundred".