47494709 has 2 divisors, whose sum is σ = 47494710. Its totient is φ = 47494708.

The previous prime is 47494673. The next prime is 47494723. The reversal of 47494709 is 90749474.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38626225 + 8868484 = 6215^2 + 2978^2 .

It is a cyclic number.

It is not a de Polignac number, because 47494709 - 2⁸ = 47494453 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 47494709.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47494729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23747354 + 23747355.

It is an arithmetic number, because the mean of its divisors is an integer number (23747355).

Almost surely, 2^47494709 is an apocalyptic number.

It is an amenable number.

47494709 is a deficient number, since it is larger than the sum of its proper divisors (1).

47494709 is an equidigital number, since it uses as much as digits as its factorization.

47494709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 254016, while the sum is 44.

The square root of 47494709 is about 6891.6405158714. The cubic root of 47494709 is about 362.1443748164.

The spelling of 47494709 in words is "forty-seven million, four hundred ninety-four thousand, seven hundred nine".