49143999 has 16 divisors (see below), whose sum is σ = 67875840. Its totient is φ = 31607520.

The previous prime is 49143989. The next prime is 49144003. The reversal of 49143999 is 99934194.

It is not a de Polignac number, because 49143999 - 2⁵ = 49143967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49143929) 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 in 15 ways as a sum of consecutive naturals, for example, 7557 + ... + 12465.

It is an arithmetic number, because the mean of its divisors is an integer number (4242240).

Almost surely, 2^49143999 is an apocalyptic number.

49143999 is a deficient number, since it is larger than the sum of its proper divisors (18731841).

49143999 is a wasteful number, since it uses less digits than its factorization.

49143999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5030.

The product of its digits is 314928, while the sum is 48.

The square root of 49143999 is about 7010.2780971941. The cubic root of 49143999 is about 366.2886805431.

The spelling of 49143999 in words is "forty-nine million, one hundred forty-three thousand, nine hundred ninety-nine".