16440193 has 16 divisors (see below), whose sum is σ = 21390336. Its totient is φ = 12252240.

The previous prime is 16440181. The next prime is 16440197. The reversal of 16440193 is 39104461.

It is not a de Polignac number, because 16440193 - 2⁵ = 16440161 is a prime.

It is a super-3 number, since 3×16440193³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (16440197) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2871 + ... + 6412.

It is an arithmetic number, because the mean of its divisors is an integer number (1336896).

Almost surely, 2^16440193 is an apocalyptic number.

It is an amenable number.

16440193 is a deficient number, since it is larger than the sum of its proper divisors (4950143).

16440193 is a wasteful number, since it uses less digits than its factorization.

16440193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9324.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 16440193 is about 4054.6507864426. The cubic root of 16440193 is about 254.2742042602.

The spelling of 16440193 in words is "sixteen million, four hundred forty thousand, one hundred ninety-three".