47420887 has 8 divisors (see below), whose sum is σ = 50253840. Its totient is φ = 44667840.

The previous prime is 47420843. The next prime is 47420897. The reversal of 47420887 is 78802474.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 47420887 - 2⁷ = 47420759 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 (47420897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18753 + ... + 21130.

It is an arithmetic number, because the mean of its divisors is an integer number (6281730).

Almost surely, 2^47420887 is an apocalyptic number.

47420887 is a deficient number, since it is larger than the sum of its proper divisors (2832953).

47420887 is a wasteful number, since it uses less digits than its factorization.

47420887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39953.

The product of its (nonzero) digits is 100352, while the sum is 40.

The square root of 47420887 is about 6886.2825239747. The cubic root of 47420887 is about 361.9566480446.

The spelling of 47420887 in words is "forty-seven million, four hundred twenty thousand, eight hundred eighty-seven".