16406407 has 2 divisors, whose sum is σ = 16406408. Its totient is φ = 16406406.

The previous prime is 16406393. The next prime is 16406419. The reversal of 16406407 is 70460461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16406407 - 2¹⁵ = 16373639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16406477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8203203 + 8203204.

It is an arithmetic number, because the mean of its divisors is an integer number (8203204).

Almost surely, 2^16406407 is an apocalyptic number.

16406407 is a deficient number, since it is larger than the sum of its proper divisors (1).

16406407 is an equidigital number, since it uses as much as digits as its factorization.

16406407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 16406407 is about 4050.4823169593. The cubic root of 16406407 is about 254.0998997369.

Adding to 16406407 its reverse (70460461), we get a palindrome (86866868).

The spelling of 16406407 in words is "sixteen million, four hundred six thousand, four hundred seven".