16407401 has 4 divisors (see below), whose sum is σ = 16936704. Its totient is φ = 15878100.

The previous prime is 16407383. The next prime is 16407403. The reversal of 16407401 is 10470461.

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: 10470461 = 479 ⋅21859.

It is a cyclic number.

It is not a de Polignac number, because 16407401 - 2¹⁴ = 16391017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16407403) 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, 264605 + ... + 264666.

It is an arithmetic number, because the mean of its divisors is an integer number (4234176).

Almost surely, 2^16407401 is an apocalyptic number.

It is an amenable number.

16407401 is a deficient number, since it is larger than the sum of its proper divisors (529303).

16407401 is an equidigital number, since it uses as much as digits as its factorization.

16407401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529302.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 16407401 is about 4050.6050165377. The cubic root of 16407401 is about 254.1050312728.

Adding to 16407401 its reverse (10470461), we get a palindrome (26877862).

The spelling of 16407401 in words is "sixteen million, four hundred seven thousand, four hundred one".