47990899 has 6 divisors (see below), whose sum is σ = 52750460. Its totient is φ = 43627980.

The previous prime is 47990863. The next prime is 47990909. The reversal of 47990899 is 99809974.

47990899 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 47990899 - 2⁷ = 47990771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47990809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 198189 + ... + 198430.

Almost surely, 2^47990899 is an apocalyptic number.

47990899 is a deficient number, since it is larger than the sum of its proper divisors (4759561).

47990899 is a wasteful number, since it uses less digits than its factorization.

47990899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396641 (or 396630 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 55.

The square root of 47990899 is about 6927.5463910392. The cubic root of 47990899 is about 363.4011482056.

It can be divided in two parts, 479 and 90899, that added together give a triangular number (91378 = T₄₂₇).

The spelling of 47990899 in words is "forty-seven million, nine hundred ninety thousand, eight hundred ninety-nine".