869801951 has 2 divisors, whose sum is σ = 869801952. Its totient is φ = 869801950.

The previous prime is 869801941. The next prime is 869801987. The reversal of 869801951 is 159108968.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 869801951 - 2⁶ = 869801887 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 869801896 and 869801905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (869801941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434900975 + 434900976.

It is an arithmetic number, because the mean of its divisors is an integer number (434900976).

Almost surely, 2^869801951 is an apocalyptic number.

869801951 is a deficient number, since it is larger than the sum of its proper divisors (1).

869801951 is an equidigital number, since it uses as much as digits as its factorization.

869801951 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 47.

The square root of 869801951 is about 29492.4049714499. The cubic root of 869801951 is about 954.5678265301.

The spelling of 869801951 in words is "eight hundred sixty-nine million, eight hundred one thousand, nine hundred fifty-one".