862972069 has 2 divisors, whose sum is σ = 862972070. Its totient is φ = 862972068.

The previous prime is 862972051. The next prime is 862972081. The reversal of 862972069 is 960279268.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 820135044 + 42837025 = 28638^2 + 6545^2 .

It is a cyclic number.

It is not a de Polignac number, because 862972069 - 2²³ = 854583461 is a prime.

It is a super-2 number, since 2×862972069² = 1489441583748281522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (862972769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431486034 + 431486035.

It is an arithmetic number, because the mean of its divisors is an integer number (431486035).

Almost surely, 2^862972069 is an apocalyptic number.

It is an amenable number.

862972069 is a deficient number, since it is larger than the sum of its proper divisors (1).

862972069 is an equidigital number, since it uses as much as digits as its factorization.

862972069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 49.

The square root of 862972069 is about 29376.3862481416. The cubic root of 862972069 is about 952.0627639839.

The spelling of 862972069 in words is "eight hundred sixty-two million, nine hundred seventy-two thousand, sixty-nine".