49146991 has 2 divisors, whose sum is σ = 49146992. Its totient is φ = 49146990.

The previous prime is 49146971. The next prime is 49147001. The reversal of 49146991 is 19964194.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 49146991 - 2⁵ = 49146959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49146971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24573495 + 24573496.

It is an arithmetic number, because the mean of its divisors is an integer number (24573496).

Almost surely, 2^49146991 is an apocalyptic number.

49146991 is a deficient number, since it is larger than the sum of its proper divisors (1).

49146991 is an equidigital number, since it uses as much as digits as its factorization.

49146991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 43.

The square root of 49146991 is about 7010.4914948953. The cubic root of 49146991 is about 366.2961138922.

The spelling of 49146991 in words is "forty-nine million, one hundred forty-six thousand, nine hundred ninety-one".