609399487 has 2 divisors, whose sum is σ = 609399488. Its totient is φ = 609399486.

The previous prime is 609399449. The next prime is 609399499. The reversal of 609399487 is 784993906.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-609399487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (609399587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304699743 + 304699744.

It is an arithmetic number, because the mean of its divisors is an integer number (304699744).

Almost surely, 2^609399487 is an apocalyptic number.

609399487 is a deficient number, since it is larger than the sum of its proper divisors (1).

609399487 is an equidigital number, since it uses as much as digits as its factorization.

609399487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2939328, while the sum is 55.

The square root of 609399487 is about 24686.0180466595. The cubic root of 609399487 is about 847.8142165802.

The spelling of 609399487 in words is "six hundred nine million, three hundred ninety-nine thousand, four hundred eighty-seven".