609744249 has 9 divisors (see below), whose sum is σ = 880848709. Its totient is φ = 406446780.

The previous prime is 609744229. The next prime is 609744269. The reversal of 609744249 is 942447906.

The square root of 609744249 is 24693.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (609744229) and next prime (609744269).

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 609744249 - 2¹⁷ = 609613177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (609744229) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 69964 + ... + 78194.

Almost surely, 2^609744249 is an apocalyptic number.

609744249 is the 24693-rd square number.

609744249 is the 12347-th centered octagonal number.

It is an amenable number.

609744249 is a deficient number, since it is larger than the sum of its proper divisors (271104460).

609744249 is an frugal number, since it uses more digits than its factorization.

609744249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16468 (or 8234 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The cubic root of 609744249 is about 847.9740673992.

The spelling of 609744249 in words is "six hundred nine million, seven hundred forty-four thousand, two hundred forty-nine".