49278399 has 8 divisors (see below), whose sum is σ = 65736960. Its totient is φ = 32836056.

The previous prime is 49278391. The next prime is 49278403. The reversal of 49278399 is 99387294.

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

It is not a de Polignac number, because 49278399 - 2³ = 49278391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49278391) 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, 10042 + ... + 14120.

It is an arithmetic number, because the mean of its divisors is an integer number (8217120).

Almost surely, 2^49278399 is an apocalyptic number.

49278399 is a deficient number, since it is larger than the sum of its proper divisors (16458561).

49278399 is a wasteful number, since it uses less digits than its factorization.

49278399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8109.

The product of its digits is 979776, while the sum is 51.

The square root of 49278399 is about 7019.8574771857. The cubic root of 49278399 is about 366.6222878337.

The spelling of 49278399 in words is "forty-nine million, two hundred seventy-eight thousand, three hundred ninety-nine".