1109940478 has 8 divisors (see below), whose sum is σ = 1671241968. Its totient is φ = 552859824.

The previous prime is 1109940473. The next prime is 1109940527. The reversal of 1109940478 is 8740499011.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1109940473) 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, 1054551 + ... + 1055602.

It is an arithmetic number, because the mean of its divisors is an integer number (208905246).

Almost surely, 2^1109940478 is an apocalyptic number.

1109940478 is a deficient number, since it is larger than the sum of its proper divisors (561301490).

1109940478 is a wasteful number, since it uses less digits than its factorization.

1109940478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2110418.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 1109940478 is about 33315.7692091898. The cubic root of 1109940478 is about 1035.3802979081.

The spelling of 1109940478 in words is "one billion, one hundred nine million, nine hundred forty thousand, four hundred seventy-eight".