16040693 has 4 divisors (see below), whose sum is σ = 16884960. Its totient is φ = 15196428.

The previous prime is 16040681. The next prime is 16040699. The reversal of 16040693 is 39604061.

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.

It is not a de Polignac number, because 16040693 - 2¹² = 16036597 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 (16040699) 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, 422105 + ... + 422142.

It is an arithmetic number, because the mean of its divisors is an integer number (4221240).

Almost surely, 2^16040693 is an apocalyptic number.

It is an amenable number.

16040693 is a deficient number, since it is larger than the sum of its proper divisors (844267).

16040693 is an equidigital number, since it uses as much as digits as its factorization.

16040693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844266.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 16040693 is about 4005.0833948871. The cubic root of 16040693 is about 252.1976539932.

The spelling of 16040693 in words is "sixteen million, forty thousand, six hundred ninety-three".