16400347 has 2 divisors, whose sum is σ = 16400348. Its totient is φ = 16400346.

The previous prime is 16400317. The next prime is 16400383. The reversal of 16400347 is 74300461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16400347 - 2¹¹ = 16398299 is a prime.

It is equal to p_1055158 and since 16400347 and 1055158 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (16400317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8200173 + 8200174.

It is an arithmetic number, because the mean of its divisors is an integer number (8200174).

Almost surely, 2^16400347 is an apocalyptic number.

16400347 is a deficient number, since it is larger than the sum of its proper divisors (1).

16400347 is an equidigital number, since it uses as much as digits as its factorization.

16400347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 16400347 is about 4049.7341888080. The cubic root of 16400347 is about 254.0686104359.

The spelling of 16400347 in words is "sixteen million, four hundred thousand, three hundred forty-seven".