152397809 has 4 divisors (see below), whose sum is σ = 161362404. Its totient is φ = 143433216.

The previous prime is 152397799. The next prime is 152397811. The reversal of 152397809 is 908793251.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 908793251 = 28879 ⋅31469.

It can be written as a sum of positive squares in 2 ways, for example, as 139901584 + 12496225 = 11828^2 + 3535^2 .

It is not a de Polignac number, because 152397809 - 2²⁴ = 135620593 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 152397809.

It is not an unprimeable number, because it can be changed into a prime (152391809) 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, 4482272 + ... + 4482305.

It is an arithmetic number, because the mean of its divisors is an integer number (40340601).

Almost surely, 2^152397809 is an apocalyptic number.

It is an amenable number.

152397809 is a deficient number, since it is larger than the sum of its proper divisors (8964595).

152397809 is an equidigital number, since it uses as much as digits as its factorization.

152397809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8964594.

The product of its (nonzero) digits is 136080, while the sum is 44.

The square root of 152397809 is about 12344.9507491930. The cubic root of 152397809 is about 534.1455005703.

The spelling of 152397809 in words is "one hundred fifty-two million, three hundred ninety-seven thousand, eight hundred nine".