499934381 has 2 divisors, whose sum is σ = 499934382. Its totient is φ = 499934380.

The previous prime is 499934377. The next prime is 499934387. The reversal of 499934381 is 183439994.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 499746025 + 188356 = 22355^2 + 434^2 .

It is a cyclic number.

It is not a de Polignac number, because 499934381 - 2² = 499934377 is a prime.

It is a super-2 number, since 2×499934381² = 499868770611706322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (499934387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249967190 + 249967191.

It is an arithmetic number, because the mean of its divisors is an integer number (249967191).

Almost surely, 2^499934381 is an apocalyptic number.

It is an amenable number.

499934381 is a deficient number, since it is larger than the sum of its proper divisors (1).

499934381 is an equidigital number, since it uses as much as digits as its factorization.

499934381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 839808, while the sum is 50.

The square root of 499934381 is about 22359.2124414077. The cubic root of 499934381 is about 793.6658032419.

The spelling of 499934381 in words is "four hundred ninety-nine million, nine hundred thirty-four thousand, three hundred eighty-one".