11939719 has 4 divisors (see below), whose sum is σ = 13025160. Its totient is φ = 10854280.

The previous prime is 11939701. The next prime is 11939731. The reversal of 11939719 is 91793911.

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 11939719 - 2¹³ = 11931527 is a prime.

It is a super-2 number, since 2×11939719² = 285113779597922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11939749) 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, 542704 + ... + 542725.

It is an arithmetic number, because the mean of its divisors is an integer number (3256290).

Almost surely, 2^11939719 is an apocalyptic number.

11939719 is a deficient number, since it is larger than the sum of its proper divisors (1085441).

11939719 is a wasteful number, since it uses less digits than its factorization.

11939719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1085440.

The product of its digits is 15309, while the sum is 40.

The square root of 11939719 is about 3455.3898477596. The cubic root of 11939719 is about 228.5588463498.

The spelling of 11939719 in words is "eleven million, nine hundred thirty-nine thousand, seven hundred nineteen".