158469397 has 4 divisors (see below), whose sum is σ = 159533100. Its totient is φ = 157405696.

The previous prime is 158469391. The next prime is 158469401. The reversal of 158469397 is 793964851.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16597476 + 141871921 = 4074^2 + 11911^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158469397 is a prime.

It is a super-2 number, since 2×158469397² = 50225099571087218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158469391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 531628 + ... + 531925.

It is an arithmetic number, because the mean of its divisors is an integer number (39883275).

Almost surely, 2^158469397 is an apocalyptic number.

It is an amenable number.

158469397 is a deficient number, since it is larger than the sum of its proper divisors (1063703).

158469397 is a wasteful number, since it uses less digits than its factorization.

158469397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063702.

The product of its digits is 1632960, while the sum is 52.

The square root of 158469397 is about 12588.4628529459. The cubic root of 158469397 is about 541.1468504353.

The spelling of 158469397 in words is "one hundred fifty-eight million, four hundred sixty-nine thousand, three hundred ninety-seven".