11945945 has 8 divisors (see below), whose sum is σ = 15638400. Its totient is φ = 8687920.

The previous prime is 11945929. The next prime is 11945953. The reversal of 11945945 is 54954911.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11945945 - 2⁴ = 11945929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11945899 and 11945908.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108545 + ... + 108654.

It is an arithmetic number, because the mean of its divisors is an integer number (1954800).

Almost surely, 2^11945945 is an apocalyptic number.

It is an amenable number.

11945945 is a deficient number, since it is larger than the sum of its proper divisors (3692455).

11945945 is a wasteful number, since it uses less digits than its factorization.

11945945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217215.

The product of its digits is 32400, while the sum is 38.

The square root of 11945945 is about 3456.2906417140. The cubic root of 11945945 is about 228.5985669972.

It can be divided in two parts, 119 and 45945, that added together give a palindrome (46064).

The spelling of 11945945 in words is "eleven million, nine hundred forty-five thousand, nine hundred forty-five".