838696961 has 4 divisors (see below), whose sum is σ = 846119172. Its totient is φ = 831274752.

The previous prime is 838696939. The next prime is 838696981. The reversal of 838696961 is 169696838.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 169696838 = 2 ⋅84848419.

It can be written as a sum of positive squares in 2 ways, for example, as 317944561 + 520752400 = 17831^2 + 22820^2 .

It is a cyclic number.

It is not a de Polignac number, because 838696961 - 2²² = 834502657 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 838696897 and 838696906.

It is not an unprimeable number, because it can be changed into a prime (838696931) 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, 3710936 + ... + 3711161.

It is an arithmetic number, because the mean of its divisors is an integer number (211529793).

It is a Proth number, since it is equal to 25595 ⋅ 2¹⁵ + 1 and 25595 < 2¹⁵.

Almost surely, 2^838696961 is an apocalyptic number.

It is an amenable number.

838696961 is a deficient number, since it is larger than the sum of its proper divisors (7422211).

838696961 is a wasteful number, since it uses less digits than its factorization.

838696961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7422210.

The product of its digits is 3359232, while the sum is 56.

The square root of 838696961 is about 28960.2652094210. The cubic root of 838696961 is about 943.0506595039.

The spelling of 838696961 in words is "eight hundred thirty-eight million, six hundred ninety-six thousand, nine hundred sixty-one".