16409479 has 2 divisors, whose sum is σ = 16409480. Its totient is φ = 16409478.

The previous prime is 16409473. The next prime is 16409527. The reversal of 16409479 is 97490461.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16409479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16409473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8204739 + 8204740.

It is an arithmetic number, because the mean of its divisors is an integer number (8204740).

Almost surely, 2^16409479 is an apocalyptic number.

16409479 is a deficient number, since it is larger than the sum of its proper divisors (1).

16409479 is an equidigital number, since it uses as much as digits as its factorization.

16409479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 16409479 is about 4050.8615133080. The cubic root of 16409479 is about 254.1157583011.

The spelling of 16409479 in words is "sixteen million, four hundred nine thousand, four hundred seventy-nine".