47500909 has 2 divisors, whose sum is σ = 47500910. Its totient is φ = 47500908.

The previous prime is 47500891. The next prime is 47500913. The reversal of 47500909 is 90900574.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40998409 + 6502500 = 6403^2 + 2550^2 .

It is a cyclic number.

It is not a de Polignac number, because 47500909 - 2¹⁹ = 46976621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47500949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23750454 + 23750455.

It is an arithmetic number, because the mean of its divisors is an integer number (23750455).

Almost surely, 2^47500909 is an apocalyptic number.

It is an amenable number.

47500909 is a deficient number, since it is larger than the sum of its proper divisors (1).

47500909 is an equidigital number, since it uses as much as digits as its factorization.

47500909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 47500909 is about 6892.0903215208. The cubic root of 47500909 is about 362.1601323430.

The spelling of 47500909 in words is "forty-seven million, five hundred thousand, nine hundred nine".