47249865 has 96 divisors (see below), whose sum is σ = 96624000. Its totient is φ = 21835008.

The previous prime is 47249857. The next prime is 47249879. The reversal of 47249865 is 56894274.

It is a happy number.

It is not a de Polignac number, because 47249865 - 2³ = 47249857 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

Its product of digits (483840) is a multiple of the sum of its prime factors (168).

It is a self number, because there is not a number n which added to its sum of digits gives 47249865.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 433431 + ... + 433539.

It is an arithmetic number, because the mean of its divisors is an integer number (1006500).

Almost surely, 2^47249865 is an apocalyptic number.

47249865 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

47249865 is an abundant number, since it is smaller than the sum of its proper divisors (49374135).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47249865 is a wasteful number, since it uses less digits than its factorization.

47249865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168 (or 149 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 47249865 is about 6873.8537226217. The cubic root of 47249865 is about 361.5209953199.

The spelling of 47249865 in words is "forty-seven million, two hundred forty-nine thousand, eight hundred sixty-five".