16440977 has 8 divisors (see below), whose sum is σ = 18816000. Its totient is φ = 14072544.

The previous prime is 16440953. The next prime is 16440979. The reversal of 16440977 is 77904461.

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

It is a cyclic number.

It is not a de Polignac number, because 16440977 - 2¹⁰ = 16439953 is a prime.

It is a super-3 number, since 3×16440977³ (a number of 23 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16440977.

It is not an unprimeable number, because it can be changed into a prime (16440979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6224 + ... + 8462.

It is an arithmetic number, because the mean of its divisors is an integer number (2352000).

Almost surely, 2^16440977 is an apocalyptic number.

It is an amenable number.

16440977 is a deficient number, since it is larger than the sum of its proper divisors (2375023).

16440977 is a wasteful number, since it uses less digits than its factorization.

16440977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3295.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 16440977 is about 4054.7474643928. The cubic root of 16440977 is about 254.2782461391.

The spelling of 16440977 in words is "sixteen million, four hundred forty thousand, nine hundred seventy-seven".