838710491 has 2 divisors, whose sum is σ = 838710492. Its totient is φ = 838710490.

The previous prime is 838710463. The next prime is 838710493. The reversal of 838710491 is 194017838.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-838710491 is a prime.

It is a super-2 number, since 2×838710491² = 1406870575426922162, which contains 22 as substring.

Together with 838710493, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (838710493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 419355245 + 419355246.

It is an arithmetic number, because the mean of its divisors is an integer number (419355246).

Almost surely, 2^838710491 is an apocalyptic number.

838710491 is a deficient number, since it is larger than the sum of its proper divisors (1).

838710491 is an equidigital number, since it uses as much as digits as its factorization.

838710491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 838710491 is about 28960.4988044060. The cubic root of 838710491 is about 943.0557306271.

The spelling of 838710491 in words is "eight hundred thirty-eight million, seven hundred ten thousand, four hundred ninety-one".