49143791 has 2 divisors, whose sum is σ = 49143792. Its totient is φ = 49143790.

The previous prime is 49143781. The next prime is 49143827. The reversal of 49143791 is 19734194.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49143791 is a prime.

It is a super-2 number, since 2×49143791² = 4830224387703362, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49143701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24571895 + 24571896.

It is an arithmetic number, because the mean of its divisors is an integer number (24571896).

Almost surely, 2^49143791 is an apocalyptic number.

49143791 is a deficient number, since it is larger than the sum of its proper divisors (1).

49143791 is an equidigital number, since it uses as much as digits as its factorization.

49143791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 38.

The square root of 49143791 is about 7010.2632618183. The cubic root of 49143791 is about 366.2881637750.

The spelling of 49143791 in words is "forty-nine million, one hundred forty-three thousand, seven hundred ninety-one".