860291969 has 2 divisors, whose sum is σ = 860291970. Its totient is φ = 860291968.

The previous prime is 860291963. The next prime is 860292061. The reversal of 860291969 is 969192068.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 580231744 + 280060225 = 24088^2 + 16735^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-860291969 is a prime.

It is a super-2 number, since 2×860291969² = 1480204543851793922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (860291963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430145984 + 430145985.

It is an arithmetic number, because the mean of its divisors is an integer number (430145985).

Almost surely, 2^860291969 is an apocalyptic number.

It is an amenable number.

860291969 is a deficient number, since it is larger than the sum of its proper divisors (1).

860291969 is an equidigital number, since it uses as much as digits as its factorization.

860291969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 419904, while the sum is 50.

The square root of 860291969 is about 29330.7342049257. The cubic root of 860291969 is about 951.0761467008.

The spelling of 860291969 in words is "eight hundred sixty million, two hundred ninety-one thousand, nine hundred sixty-nine".