16409977 has 12 divisors (see below), whose sum is σ = 17501616. Its totient is φ = 15383160.

The previous prime is 16409951. The next prime is 16409983. The reversal of 16409977 is 77990461.

It is a happy number.

It is not a de Polignac number, because 16409977 - 2⁷ = 16409849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16409377) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47118 + ... + 47464.

It is an arithmetic number, because the mean of its divisors is an integer number (1458468).

Almost surely, 2^16409977 is an apocalyptic number.

It is an amenable number.

16409977 is a deficient number, since it is larger than the sum of its proper divisors (1091639).

16409977 is a wasteful number, since it uses less digits than its factorization.

16409977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516 (or 497 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 16409977 is about 4050.9229812476. The cubic root of 16409977 is about 254.1183289366.

The spelling of 16409977 in words is "sixteen million, four hundred nine thousand, nine hundred seventy-seven".