16249406 has 4 divisors (see below), whose sum is σ = 24374112. Its totient is φ = 8124702.

The previous prime is 16249403. The next prime is 16249411. The reversal of 16249406 is 60494261.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60494261 = 29 ⋅2086009.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16249403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4062350 + ... + 4062353.

It is an arithmetic number, because the mean of its divisors is an integer number (6093528).

Almost surely, 2^16249406 is an apocalyptic number.

16249406 is a deficient number, since it is larger than the sum of its proper divisors (8124706).

16249406 is an equidigital number, since it uses as much as digits as its factorization.

16249406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8124705.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 16249406 is about 4031.0551968436. The cubic root of 16249406 is about 253.2867646780.

The spelling of 16249406 in words is "sixteen million, two hundred forty-nine thousand, four hundred six".