16400077 has 8 divisors (see below), whose sum is σ = 16803072. Its totient is φ = 16002000.

The previous prime is 16400047. The next prime is 16400093. The reversal of 16400077 is 77000461.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16400077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16400017) 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, 6028 + ... + 8314.

It is an arithmetic number, because the mean of its divisors is an integer number (2100384).

Almost surely, 2^16400077 is an apocalyptic number.

It is an amenable number.

16400077 is a deficient number, since it is larger than the sum of its proper divisors (402995).

16400077 is a wasteful number, since it uses less digits than its factorization.

16400077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2459.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 16400077 is about 4049.7008531495. The cubic root of 16400077 is about 254.0672161788.

The spelling of 16400077 in words is "sixteen million, four hundred thousand, seventy-seven".