47699887 has 4 divisors (see below), whose sum is σ = 47877480. Its totient is φ = 47522296.

The previous prime is 47699863. The next prime is 47699893. The reversal of 47699887 is 78899674.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 47699887 - 2⁷ = 47699759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47697887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88393 + ... + 88930.

It is an arithmetic number, because the mean of its divisors is an integer number (11969370).

Almost surely, 2^47699887 is an apocalyptic number.

47699887 is a deficient number, since it is larger than the sum of its proper divisors (177593).

47699887 is a wasteful number, since it uses less digits than its factorization.

47699887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177592.

The product of its digits is 6096384, while the sum is 58.

The square root of 47699887 is about 6906.5104792507. The cubic root of 47699887 is about 362.6651157429.

The spelling of 47699887 in words is "forty-seven million, six hundred ninety-nine thousand, eight hundred eighty-seven".