11902823 has 2 divisors, whose sum is σ = 11902824. Its totient is φ = 11902822.

The previous prime is 11902819. The next prime is 11902829. The reversal of 11902823 is 32820911.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11902823 - 2² = 11902819 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 11902792 and 11902801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11902829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5951411 + 5951412.

It is an arithmetic number, because the mean of its divisors is an integer number (5951412).

Almost surely, 2^11902823 is an apocalyptic number.

11902823 is a deficient number, since it is larger than the sum of its proper divisors (1).

11902823 is an equidigital number, since it uses as much as digits as its factorization.

11902823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 11902823 is about 3450.0468112766. The cubic root of 11902823 is about 228.3231733392.

The spelling of 11902823 in words is "eleven million, nine hundred two thousand, eight hundred twenty-three".