838977497 has 2 divisors, whose sum is σ = 838977498. Its totient is φ = 838977496.

The previous prime is 838977487. The next prime is 838977563. The reversal of 838977497 is 794779838.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 449270416 + 389707081 = 21196^2 + 19741^2 .

It is a cyclic number.

It is not a de Polignac number, because 838977497 - 2¹⁰ = 838976473 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (838977467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 419488748 + 419488749.

It is an arithmetic number, because the mean of its divisors is an integer number (419488749).

Almost surely, 2^838977497 is an apocalyptic number.

It is an amenable number.

838977497 is a deficient number, since it is larger than the sum of its proper divisors (1).

838977497 is an equidigital number, since it uses as much as digits as its factorization.

838977497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21337344, while the sum is 62.

The square root of 838977497 is about 28965.1082683977. The cubic root of 838977497 is about 943.1557948826.

The spelling of 838977497 in words is "eight hundred thirty-eight million, nine hundred seventy-seven thousand, four hundred ninety-seven".