47899837 has 2 divisors, whose sum is σ = 47899838. Its totient is φ = 47899836.

The previous prime is 47899811. The next prime is 47899847. The reversal of 47899837 is 73899874.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27730756 + 20169081 = 5266^2 + 4491^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47899837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47899847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23949918 + 23949919.

It is an arithmetic number, because the mean of its divisors is an integer number (23949919).

Almost surely, 2^47899837 is an apocalyptic number.

It is an amenable number.

47899837 is a deficient number, since it is larger than the sum of its proper divisors (1).

47899837 is an equidigital number, since it uses as much as digits as its factorization.

47899837 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3048192, while the sum is 55.

The square root of 47899837 is about 6920.9708134047. The cubic root of 47899837 is about 363.1711532920.

The spelling of 47899837 in words is "forty-seven million, eight hundred ninety-nine thousand, eight hundred thirty-seven".