11957743 has 6 divisors (see below), whose sum is σ = 13676456. Its totient is φ = 10241652.

The previous prime is 11957731. The next prime is 11957747. The reversal of 11957743 is 34775911.

It is not a de Polignac number, because 11957743 - 2¹⁷ = 11826671 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 (11957747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8496 + ... + 9802.

Almost surely, 2^11957743 is an apocalyptic number.

11957743 is a deficient number, since it is larger than the sum of its proper divisors (1718713).

11957743 is an frugal number, since it uses more digits than its factorization.

11957743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2621 (or 1314 counting only the distinct ones).

The product of its digits is 26460, while the sum is 37.

The square root of 11957743 is about 3457.9969635614. The cubic root of 11957743 is about 228.6737980627.

The spelling of 11957743 in words is "eleven million, nine hundred fifty-seven thousand, seven hundred forty-three".