16000397 has 8 divisors (see below), whose sum is σ = 18312000. Its totient is φ = 13695264.

The previous prime is 16000393. The next prime is 16000399. The reversal of 16000397 is 79300061.

It is a happy number.

16000397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 16000397 - 2² = 16000393 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16000393) 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, 6254 + ... + 8432.

It is an arithmetic number, because the mean of its divisors is an integer number (2289000).

Almost surely, 2^16000397 is an apocalyptic number.

It is an amenable number.

16000397 is a deficient number, since it is larger than the sum of its proper divisors (2311603).

16000397 is a wasteful number, since it uses less digits than its factorization.

16000397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3235.

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 16000397 is about 4000.0496246922. The cubic root of 16000397 is about 251.9862940811.

The spelling of 16000397 in words is "sixteen million, three hundred ninety-seven", and thus it is an aban number.