49278319 has 2 divisors, whose sum is σ = 49278320. Its totient is φ = 49278318.

The previous prime is 49278311. The next prime is 49278329. The reversal of 49278319 is 91387294.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49278319 - 2³ = 49278311 is a prime.

It is a super-2 number, since 2×49278319² = 4856705446931522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49278311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24639159 + 24639160.

It is an arithmetic number, because the mean of its divisors is an integer number (24639160).

Almost surely, 2^49278319 is an apocalyptic number.

49278319 is a deficient number, since it is larger than the sum of its proper divisors (1).

49278319 is an equidigital number, since it uses as much as digits as its factorization.

49278319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 43.

The square root of 49278319 is about 7019.8517790620. The cubic root of 49278319 is about 366.6220894384.

The spelling of 49278319 in words is "forty-nine million, two hundred seventy-eight thousand, three hundred nineteen".