11420993 has 4 divisors (see below), whose sum is σ = 11427840. Its totient is φ = 11414148.

The previous prime is 11420971. The next prime is 11421017. The reversal of 11420993 is 39902411.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 39902411 = 431 ⋅92581.

It is a cyclic number.

It is not a de Polignac number, because 11420993 - 2¹⁶ = 11355457 is a prime.

It is a super-2 number, since 2×11420993² = 260878162212098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11420293) 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, 896 + ... + 4862.

It is an arithmetic number, because the mean of its divisors is an integer number (2856960).

Almost surely, 2^11420993 is an apocalyptic number.

It is an amenable number.

11420993 is a deficient number, since it is larger than the sum of its proper divisors (6847).

11420993 is an equidigital number, since it uses as much as digits as its factorization.

11420993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6846.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 11420993 is about 3379.4959683361. The cubic root of 11420993 is about 225.1997764763.

The spelling of 11420993 in words is "eleven million, four hundred twenty thousand, nine hundred ninety-three".