508423397 has 4 divisors (see below), whose sum is σ = 508673100. Its totient is φ = 508173696.

The previous prime is 508423373. The next prime is 508423423. The reversal of 508423397 is 793324805.

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 95277121 + 413146276 = 9761^2 + 20326^2 .

It is a cyclic number.

It is not a de Polignac number, because 508423397 - 2²² = 504229093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (508423297) 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, 121772 + ... + 125877.

It is an arithmetic number, because the mean of its divisors is an integer number (127168275).

Almost surely, 2^508423397 is an apocalyptic number.

It is an amenable number.

508423397 is a deficient number, since it is larger than the sum of its proper divisors (249703).

508423397 is a wasteful number, since it uses less digits than its factorization.

508423397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249702.

The product of its (nonzero) digits is 181440, while the sum is 41.

The square root of 508423397 is about 22548.2459849985. The cubic root of 508423397 is about 798.1328314298.

The spelling of 508423397 in words is "five hundred eight million, four hundred twenty-three thousand, three hundred ninety-seven".