838890761 has 2 divisors, whose sum is σ = 838890762. Its totient is φ = 838890760.

The previous prime is 838890713. The next prime is 838890763. The reversal of 838890761 is 167098838.

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., 744198400 + 94692361 = 27280^2 + 9731^2 .

It is a cyclic number.

It is not a de Polignac number, because 838890761 - 2¹⁸ = 838628617 is a prime.

Together with 838890763, 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 (838890763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 419445380 + 419445381.

It is an arithmetic number, because the mean of its divisors is an integer number (419445381).

Almost surely, 2^838890761 is an apocalyptic number.

It is an amenable number.

838890761 is a deficient number, since it is larger than the sum of its proper divisors (1).

838890761 is an equidigital number, since it uses as much as digits as its factorization.

838890761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 580608, while the sum is 50.

The square root of 838890761 is about 28963.6109799866. The cubic root of 838890761 is about 943.1232916746.

The spelling of 838890761 in words is "eight hundred thirty-eight million, eight hundred ninety thousand, seven hundred sixty-one".