47992985 has 4 divisors (see below), whose sum is σ = 57591588. Its totient is φ = 38394384.

The previous prime is 47992979. The next prime is 47993017. The reversal of 47992985 is 58929974.

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

It can be written as a sum of positive squares in 2 ways, for example, as 24334489 + 23658496 = 4933^2 + 4864^2 .

It is a cyclic number.

It is not a de Polignac number, because 47992985 - 2¹⁶ = 47927449 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4799294 + ... + 4799303.

It is an arithmetic number, because the mean of its divisors is an integer number (14397897).

Almost surely, 2^47992985 is an apocalyptic number.

It is an amenable number.

47992985 is a deficient number, since it is larger than the sum of its proper divisors (9598603).

47992985 is an equidigital number, since it uses as much as digits as its factorization.

47992985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9598602.

The product of its digits is 1632960, while the sum is 53.

The square root of 47992985 is about 6927.6969477598. The cubic root of 47992985 is about 363.4064133970.

The spelling of 47992985 in words is "forty-seven million, nine hundred ninety-two thousand, nine hundred eighty-five".