11420863 has 2 divisors, whose sum is σ = 11420864. Its totient is φ = 11420862.

The previous prime is 11420861. The next prime is 11420869. The reversal of 11420863 is 36802411.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11420863 - 2¹ = 11420861 is a prime.

It is a super-2 number, since 2×11420863² = 260872223329538, which contains 22 as substring.

Together with 11420861, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11420861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5710431 + 5710432.

It is an arithmetic number, because the mean of its divisors is an integer number (5710432).

Almost surely, 2^11420863 is an apocalyptic number.

11420863 is a deficient number, since it is larger than the sum of its proper divisors (1).

11420863 is an equidigital number, since it uses as much as digits as its factorization.

11420863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 11420863 is about 3379.4767346440. The cubic root of 11420863 is about 225.1989220240.

It can be divided in two parts, 1 and 1420863, that added together give a square (1420864 = 1192²).

The spelling of 11420863 in words is "eleven million, four hundred twenty thousand, eight hundred sixty-three".