538907749 has 2 divisors, whose sum is σ = 538907750. Its totient is φ = 538907748.

The previous prime is 538907741. The next prime is 538907753. The reversal of 538907749 is 947709835.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 521208900 + 17698849 = 22830^2 + 4207^2 .

It is a cyclic number.

It is not a de Polignac number, because 538907749 - 2³ = 538907741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 538907696 and 538907705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (538907741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269453874 + 269453875.

It is an arithmetic number, because the mean of its divisors is an integer number (269453875).

Almost surely, 2^538907749 is an apocalyptic number.

It is an amenable number.

538907749 is a deficient number, since it is larger than the sum of its proper divisors (1).

538907749 is an equidigital number, since it uses as much as digits as its factorization.

538907749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1905120, while the sum is 52.

The square root of 538907749 is about 23214.3866815387. The cubic root of 538907749 is about 813.7758726494.

The spelling of 538907749 in words is "five hundred thirty-eight million, nine hundred seven thousand, seven hundred forty-nine".