16397953 has 8 divisors (see below), whose sum is σ = 19264896. Its totient is φ = 13760400.

The previous prime is 16397933. The next prime is 16397981. The reversal of 16397953 is 35979361.

It is a happy number.

16397953 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 16397953 - 2²¹ = 14300801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16397903) 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, 57193 + ... + 57478.

It is an arithmetic number, because the mean of its divisors is an integer number (2408112).

Almost surely, 2^16397953 is an apocalyptic number.

16397953 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

16397953 is a deficient number, since it is larger than the sum of its proper divisors (2866943).

16397953 is a wasteful number, since it uses less digits than its factorization.

16397953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114695.

The product of its digits is 153090, while the sum is 43.

The square root of 16397953 is about 4049.4386030659. The cubic root of 16397953 is about 254.0562474891.

The spelling of 16397953 in words is "sixteen million, three hundred ninety-seven thousand, nine hundred fifty-three".