47886399 has 48 divisors (see below), whose sum is σ = 82162080. Its totient is φ = 26542080.

The previous prime is 47886389. The next prime is 47886409. The reversal of 47886399 is 99368874.

47886399 is a `hidden beast` number, since 478 + 86 + 3 + 99 = 666.

It is a Cunningham number, because it is equal to 6920²-1.

It is an interprime number because it is at equal distance from previous prime (47886389) and next prime (47886409).

It is not a de Polignac number, because 47886399 - 2⁴ = 47886383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47886329) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 61887 + ... + 62655.

It is an arithmetic number, because the mean of its divisors is an integer number (1711710).

Almost surely, 2^47886399 is an apocalyptic number.

47886399 is a deficient number, since it is larger than the sum of its proper divisors (34275681).

47886399 is a wasteful number, since it uses less digits than its factorization.

47886399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840 (or 837 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The square root of 47886399 is about 6919.9999277457. Note that the first 4 decimals coincide. The cubic root of 47886399 is about 363.1371883163.

It can be divided in two parts, 47 and 886399, that added together give a triangular number (886446 = T₁₃₃₁).

The spelling of 47886399 in words is "forty-seven million, eight hundred eighty-six thousand, three hundred ninety-nine".