16199401 has 4 divisors (see below), whose sum is σ = 16270992. Its totient is φ = 16127812.

The previous prime is 16199363. The next prime is 16199411. The reversal of 16199401 is 10499161.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10499161 = 107 ⋅98123.

It is a cyclic number.

It is not a de Polignac number, because 16199401 - 2¹¹ = 16197353 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16199411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35455 + ... + 35908.

It is an arithmetic number, because the mean of its divisors is an integer number (4067748).

Almost surely, 2^16199401 is an apocalyptic number.

It is an amenable number.

16199401 is a deficient number, since it is larger than the sum of its proper divisors (71591).

16199401 is an equidigital number, since it uses as much as digits as its factorization.

16199401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71590.

The product of its (nonzero) digits is 1944, while the sum is 31.

The square root of 16199401 is about 4024.8479474385. The cubic root of 16199401 is about 253.0266809338.

The spelling of 16199401 in words is "sixteen million, one hundred ninety-nine thousand, four hundred one".