16409387 has 2 divisors, whose sum is σ = 16409388. Its totient is φ = 16409386.

The previous prime is 16409377. The next prime is 16409411. The reversal of 16409387 is 78390461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16409387 - 2²⁰ = 15360811 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16409387.

It is not a weakly prime, because it can be changed into another prime (16409347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8204693 + 8204694.

It is an arithmetic number, because the mean of its divisors is an integer number (8204694).

Almost surely, 2^16409387 is an apocalyptic number.

16409387 is a deficient number, since it is larger than the sum of its proper divisors (1).

16409387 is an equidigital number, since it uses as much as digits as its factorization.

16409387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 16409387 is about 4050.8501576830. The cubic root of 16409387 is about 254.1152833989.

The spelling of 16409387 in words is "sixteen million, four hundred nine thousand, three hundred eighty-seven".