842792609 has 2 divisors, whose sum is σ = 842792610. Its totient is φ = 842792608.

The previous prime is 842792543. The next prime is 842792651. The reversal of 842792609 is 906297248.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 773952400 + 68840209 = 27820^2 + 8297^2 .

It is a cyclic number.

It is not a de Polignac number, because 842792609 - 2¹⁶ = 842727073 is a prime.

It is not a weakly prime, because it can be changed into another prime (842792689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 421396304 + 421396305.

It is an arithmetic number, because the mean of its divisors is an integer number (421396305).

Almost surely, 2^842792609 is an apocalyptic number.

It is an amenable number.

842792609 is a deficient number, since it is larger than the sum of its proper divisors (1).

842792609 is an equidigital number, since it uses as much as digits as its factorization.

842792609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 842792609 is about 29030.8905994976. The cubic root of 842792609 is about 944.5832485782.

The spelling of 842792609 in words is "eight hundred forty-two million, seven hundred ninety-two thousand, six hundred nine".