47373809 has 4 divisors (see below), whose sum is σ = 54141504. Its totient is φ = 40606116.

The previous prime is 47373803. The next prime is 47373811. The reversal of 47373809 is 90837374.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 47373809 - 2⁸ = 47373553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47373803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3383837 + ... + 3383850.

It is an arithmetic number, because the mean of its divisors is an integer number (13535376).

Almost surely, 2^47373809 is an apocalyptic number.

It is an amenable number.

47373809 is a deficient number, since it is larger than the sum of its proper divisors (6767695).

47373809 is an equidigital number, since it uses as much as digits as its factorization.

47373809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6767694.

The product of its (nonzero) digits is 127008, while the sum is 41.

The square root of 47373809 is about 6882.8634302883. The cubic root of 47373809 is about 361.8368285708.

The spelling of 47373809 in words is "forty-seven million, three hundred seventy-three thousand, eight hundred nine".