49439231 has 2 divisors, whose sum is σ = 49439232. Its totient is φ = 49439230.

The previous prime is 49439209. The next prime is 49439249. The reversal of 49439231 is 13293494.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 49439231 - 2¹⁴ = 49422847 is a prime.

It is a super-2 number, since 2×49439231² = 4888475123742722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 49439191 and 49439200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49439431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24719615 + 24719616.

It is an arithmetic number, because the mean of its divisors is an integer number (24719616).

Almost surely, 2^49439231 is an apocalyptic number.

49439231 is a deficient number, since it is larger than the sum of its proper divisors (1).

49439231 is an equidigital number, since it uses as much as digits as its factorization.

49439231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 35.

The square root of 49439231 is about 7031.3036486842. The cubic root of 49439231 is about 367.0207082683.

The spelling of 49439231 in words is "forty-nine million, four hundred thirty-nine thousand, two hundred thirty-one".