510438949 has 2 divisors, whose sum is σ = 510438950. Its totient is φ = 510438948.

The previous prime is 510438917. The next prime is 510438959. The reversal of 510438949 is 949834015.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 442260900 + 68178049 = 21030^2 + 8257^2 .

It is a cyclic number.

It is not a de Polignac number, because 510438949 - 2⁵ = 510438917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (510438959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255219474 + 255219475.

It is an arithmetic number, because the mean of its divisors is an integer number (255219475).

Almost surely, 2^510438949 is an apocalyptic number.

It is an amenable number.

510438949 is a deficient number, since it is larger than the sum of its proper divisors (1).

510438949 is an equidigital number, since it uses as much as digits as its factorization.

510438949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 510438949 is about 22592.8959852428. The cubic root of 510438949 is about 799.1861248941.

The spelling of 510438949 in words is "five hundred ten million, four hundred thirty-eight thousand, nine hundred forty-nine".