16413391 has 4 divisors (see below), whose sum is σ = 16979400. Its totient is φ = 15847384.

The previous prime is 16413389. The next prime is 16413413. The reversal of 16413391 is 19331461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16413391 - 2¹ = 16413389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16413091) 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, 282961 + ... + 283018.

It is an arithmetic number, because the mean of its divisors is an integer number (4244850).

Almost surely, 2^16413391 is an apocalyptic number.

16413391 is a deficient number, since it is larger than the sum of its proper divisors (566009).

16413391 is an equidigital number, since it uses as much as digits as its factorization.

16413391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566008.

The product of its digits is 1944, while the sum is 28.

The square root of 16413391 is about 4051.3443447824. The cubic root of 16413391 is about 254.1359503267.

The spelling of 16413391 in words is "sixteen million, four hundred thirteen thousand, three hundred ninety-one".