11923739 has 2 divisors, whose sum is σ = 11923740. Its totient is φ = 11923738.

The previous prime is 11923687. The next prime is 11923741. The reversal of 11923739 is 93732911.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11923739 is a prime.

It is a Sophie Germain prime.

Together with 11923741, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p₇₈₃₃₅₉ and since 11923739 and 783359 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 11923699 and 11923708.

It is not a weakly prime, because it can be changed into another prime (11923339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5961869 + 5961870.

It is an arithmetic number, because the mean of its divisors is an integer number (5961870).

Almost surely, 2^11923739 is an apocalyptic number.

11923739 is a deficient number, since it is larger than the sum of its proper divisors (1).

11923739 is an equidigital number, since it uses as much as digits as its factorization.

11923739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10206, while the sum is 35.

The square root of 11923739 is about 3453.0767440067. The cubic root of 11923739 is about 228.4568338706.

The spelling of 11923739 in words is "eleven million, nine hundred twenty-three thousand, seven hundred thirty-nine".