47897747 has 6 divisors (see below), whose sum is σ = 48940788. Its totient is φ = 46876484.

The previous prime is 47897719. The next prime is 47897767. The reversal of 47897747 is 74779874.

It is not a de Polignac number, because 47897747 - 2⁶ = 47897683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47897767) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8633 + ... + 13050.

It is an arithmetic number, because the mean of its divisors is an integer number (8156798).

Almost surely, 2^47897747 is an apocalyptic number.

47897747 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

47897747 is a deficient number, since it is larger than the sum of its proper divisors (1043041).

47897747 is an equidigital number, since it uses as much as digits as its factorization.

47897747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21777 (or 21730 counting only the distinct ones).

The product of its digits is 2765952, while the sum is 53.

The square root of 47897747 is about 6920.8198213795. The cubic root of 47897747 is about 363.1658711673.

The spelling of 47897747 in words is "forty-seven million, eight hundred ninety-seven thousand, seven hundred forty-seven".