16438797 has 24 divisors (see below), whose sum is σ = 24380928. Its totient is φ = 10670400.

The previous prime is 16438789. The next prime is 16438817. The reversal of 16438797 is 79783461.

It is not a de Polignac number, because 16438797 - 2³ = 16438789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16438717) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85972 + ... + 86162.

It is an arithmetic number, because the mean of its divisors is an integer number (1015872).

Almost surely, 2^16438797 is an apocalyptic number.

It is an amenable number.

16438797 is a deficient number, since it is larger than the sum of its proper divisors (7942131).

16438797 is a wasteful number, since it uses less digits than its factorization.

16438797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401 (or 398 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 16438797 is about 4054.4786347939. The cubic root of 16438797 is about 254.2670069230.

It can be divided in two parts, 1643 and 8797, that added together give a triangular number (10440 = T₁₄₄).

The spelling of 16438797 in words is "sixteen million, four hundred thirty-eight thousand, seven hundred ninety-seven".