48639191 has 2 divisors, whose sum is σ = 48639192. Its totient is φ = 48639190.

The previous prime is 48639169. The next prime is 48639197. The reversal of 48639191 is 19193684.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-48639191 is a prime.

It is a super-2 number, since 2×48639191² = 4731541802268962, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (48639197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24319595 + 24319596.

It is an arithmetic number, because the mean of its divisors is an integer number (24319596).

Almost surely, 2^48639191 is an apocalyptic number.

48639191 is a deficient number, since it is larger than the sum of its proper divisors (1).

48639191 is an equidigital number, since it uses as much as digits as its factorization.

48639191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 41.

The square root of 48639191 is about 6974.1803102587. The cubic root of 48639191 is about 365.0301870323.

The spelling of 48639191 in words is "forty-eight million, six hundred thirty-nine thousand, one hundred ninety-one".