838775897 has 4 divisors (see below), whose sum is σ = 865833216. Its totient is φ = 811718580.

The previous prime is 838775887. The next prime is 838775911. The reversal of 838775897 is 798577838.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 798577838 = 2 ⋅399288919.

It is a cyclic number.

It is not a de Polignac number, because 838775897 - 2¹⁴ = 838759513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (838775807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13528613 + ... + 13528674.

It is an arithmetic number, because the mean of its divisors is an integer number (216458304).

Almost surely, 2^838775897 is an apocalyptic number.

It is an amenable number.

838775897 is a deficient number, since it is larger than the sum of its proper divisors (27057319).

838775897 is a wasteful number, since it uses less digits than its factorization.

838775897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27057318.

The product of its digits is 23708160, while the sum is 62.

The square root of 838775897 is about 28961.6280101793. The cubic root of 838775897 is about 943.0802444096.

The spelling of 838775897 in words is "eight hundred thirty-eight million, seven hundred seventy-five thousand, eight hundred ninety-seven".