869700421 has 2 divisors, whose sum is σ = 869700422. Its totient is φ = 869700420.

The previous prime is 869700407. The next prime is 869700451. The reversal of 869700421 is 124007968.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 784784196 + 84916225 = 28014^2 + 9215^2 .

It is a cyclic number.

It is not a de Polignac number, because 869700421 - 2⁵ = 869700389 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (869700451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434850210 + 434850211.

It is an arithmetic number, because the mean of its divisors is an integer number (434850211).

Almost surely, 2^869700421 is an apocalyptic number.

It is an amenable number.

869700421 is a deficient number, since it is larger than the sum of its proper divisors (1).

869700421 is an equidigital number, since it uses as much as digits as its factorization.

869700421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 869700421 is about 29490.6836305976. The cubic root of 869700421 is about 954.5306835757.

The spelling of 869700421 in words is "eight hundred sixty-nine million, seven hundred thousand, four hundred twenty-one".