49899893 has 2 divisors, whose sum is σ = 49899894. Its totient is φ = 49899892.

The previous prime is 49899877. The next prime is 49899901. The reversal of 49899893 is 39899894.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49885969 + 13924 = 7063^2 + 118^2 .

It is a cyclic number.

It is not a de Polignac number, because 49899893 - 2⁴ = 49899877 is a prime.

It is a super-2 number, since 2×49899893² = 4979998642822898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49899793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24949946 + 24949947.

It is an arithmetic number, because the mean of its divisors is an integer number (24949947).

Almost surely, 2^49899893 is an apocalyptic number.

It is an amenable number.

49899893 is a deficient number, since it is larger than the sum of its proper divisors (1).

49899893 is an equidigital number, since it uses as much as digits as its factorization.

49899893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5038848, while the sum is 59.

The square root of 49899893 is about 7063.9856313557. The cubic root of 49899893 is about 368.1571207018.

Subtracting from 49899893 its reverse (39899894), we obtain a palindrome (9999999).

The spelling of 49899893 in words is "forty-nine million, eight hundred ninety-nine thousand, eight hundred ninety-three".