16461947 has 2 divisors, whose sum is σ = 16461948. Its totient is φ = 16461946.

The previous prime is 16461931. The next prime is 16461979. The reversal of 16461947 is 74916461.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (74916461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16461947 - 2⁴ = 16461931 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16461947.

It is not a weakly prime, because it can be changed into another prime (16461917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8230973 + 8230974.

It is an arithmetic number, because the mean of its divisors is an integer number (8230974).

Almost surely, 2^16461947 is an apocalyptic number.

16461947 is a deficient number, since it is larger than the sum of its proper divisors (1).

16461947 is an equidigital number, since it uses as much as digits as its factorization.

16461947 is an odious number, because the sum of its binary digits is odd.

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

The square root of 16461947 is about 4057.3324980829. The cubic root of 16461947 is about 254.3863084397.

The spelling of 16461947 in words is "sixteen million, four hundred sixty-one thousand, nine hundred forty-seven".