158297969 has 2 divisors, whose sum is σ = 158297970. Its totient is φ = 158297968.

The previous prime is 158297963. The next prime is 158298053. The reversal of 158297969 is 969792851.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101747569 + 56550400 = 10087^2 + 7520^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158297969 is a prime.

It is a super-2 number, since 2×158297969² = 50116493979049922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (158297963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79148984 + 79148985.

It is an arithmetic number, because the mean of its divisors is an integer number (79148985).

Almost surely, 2^158297969 is an apocalyptic number.

It is an amenable number.

158297969 is a deficient number, since it is larger than the sum of its proper divisors (1).

158297969 is an equidigital number, since it uses as much as digits as its factorization.

158297969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2449440, while the sum is 56.

The square root of 158297969 is about 12581.6520775294. The cubic root of 158297969 is about 540.9516472491.

The spelling of 158297969 in words is "one hundred fifty-eight million, two hundred ninety-seven thousand, nine hundred sixty-nine".