838429949 has 8 divisors (see below), whose sum is σ = 976285440. Its totient is φ = 705094416.

The previous prime is 838429939. The next prime is 838429957. The reversal of 838429949 is 949924838.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 838429949 - 2⁸ = 838429693 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 838429894 and 838429903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (838429909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1129589 + ... + 1130330.

It is an arithmetic number, because the mean of its divisors is an integer number (122035680).

Almost surely, 2^838429949 is an apocalyptic number.

It is an amenable number.

838429949 is a deficient number, since it is larger than the sum of its proper divisors (137855491).

838429949 is a wasteful number, since it uses less digits than its factorization.

838429949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2259979.

The product of its digits is 4478976, while the sum is 56.

The square root of 838429949 is about 28955.6548708538. The cubic root of 838429949 is about 942.9505706831.

The spelling of 838429949 in words is "eight hundred thirty-eight million, four hundred twenty-nine thousand, nine hundred forty-nine".