500872397 has 2 divisors, whose sum is σ = 500872398. Its totient is φ = 500872396.

The previous prime is 500872327. The next prime is 500872399. The reversal of 500872397 is 793278005.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 496665796 + 4206601 = 22286^2 + 2051^2 .

It is a cyclic number.

It is not a de Polignac number, because 500872397 - 2¹⁶ = 500806861 is a prime.

Together with 500872399, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (500872399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250436198 + 250436199.

It is an arithmetic number, because the mean of its divisors is an integer number (250436199).

Almost surely, 2^500872397 is an apocalyptic number.

It is an amenable number.

500872397 is a deficient number, since it is larger than the sum of its proper divisors (1).

500872397 is an equidigital number, since it uses as much as digits as its factorization.

500872397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 500872397 is about 22380.1786632726. The cubic root of 500872397 is about 794.1618724084.

The spelling of 500872397 in words is "five hundred million, eight hundred seventy-two thousand, three hundred ninety-seven".