609500399 has 2 divisors, whose sum is σ = 609500400. Its totient is φ = 609500398.

The previous prime is 609500387. The next prime is 609500413. The reversal of 609500399 is 993005906.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 609500399 - 2²⁸ = 341064943 is a prime.

It is a Sophie Germain prime.

It is equal to p_31794764 and since 609500399 and 31794764 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (602500399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304750199 + 304750200.

It is an arithmetic number, because the mean of its divisors is an integer number (304750200).

Almost surely, 2^609500399 is an apocalyptic number.

609500399 is a deficient number, since it is larger than the sum of its proper divisors (1).

609500399 is an equidigital number, since it uses as much as digits as its factorization.

609500399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 65610, while the sum is 41.

The square root of 609500399 is about 24688.0618720871. The cubic root of 609500399 is about 847.8610112297.

The spelling of 609500399 in words is "six hundred nine million, five hundred thousand, three hundred ninety-nine".