16440465 has 8 divisors (see below), whose sum is σ = 26304768. Its totient is φ = 8768240.

The previous prime is 16440407. The next prime is 16440481. The reversal of 16440465 is 56404461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16440465 - 2⁷ = 16440337 is a prime.

It is a super-3 number, since 3×16440465³ (a number of 23 digits) contains 333 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 548001 + ... + 548030.

It is an arithmetic number, because the mean of its divisors is an integer number (3288096).

Almost surely, 2^16440465 is an apocalyptic number.

16440465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16440465 is a deficient number, since it is larger than the sum of its proper divisors (9864303).

16440465 is a wasteful number, since it uses less digits than its factorization.

16440465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096039.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 16440465 is about 4054.6843280334. The cubic root of 16440465 is about 254.2756065592.

The spelling of 16440465 in words is "sixteen million, four hundred forty thousand, four hundred sixty-five".