838005249 has 4 divisors (see below), whose sum is σ = 1117340336. Its totient is φ = 558670164.

The previous prime is 838005239. The next prime is 838005277. The reversal of 838005249 is 942500838.

It is a happy number.

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.

It is not a de Polignac number, because 838005249 - 2⁷ = 838005121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (838005239) 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, 139667539 + ... + 139667544.

It is an arithmetic number, because the mean of its divisors is an integer number (279335084).

Almost surely, 2^838005249 is an apocalyptic number.

It is an amenable number.

838005249 is a deficient number, since it is larger than the sum of its proper divisors (279335087).

838005249 is a wasteful number, since it uses less digits than its factorization.

838005249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279335086.

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 838005249 is about 28948.3203139664. The cubic root of 838005249 is about 942.7913290969.

The spelling of 838005249 in words is "eight hundred thirty-eight million, five thousand, two hundred forty-nine".