838377047 has 2 divisors, whose sum is σ = 838377048. Its totient is φ = 838377046.

The previous prime is 838377019. The next prime is 838377077. The reversal of 838377047 is 740773838.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 838377047 - 2¹⁸ = 838114903 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 838376992 and 838377010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (838377077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 419188523 + 419188524.

It is an arithmetic number, because the mean of its divisors is an integer number (419188524).

Almost surely, 2^838377047 is an apocalyptic number.

838377047 is a deficient number, since it is larger than the sum of its proper divisors (1).

838377047 is an equidigital number, since it uses as much as digits as its factorization.

838377047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 790272, while the sum is 47.

The square root of 838377047 is about 28954.7413561234. The cubic root of 838377047 is about 942.9307379706.

The spelling of 838377047 in words is "eight hundred thirty-eight million, three hundred seventy-seven thousand, forty-seven".