1406664043 has 4 divisors (see below), whose sum is σ = 1433204928. Its totient is φ = 1380123160.

The previous prime is 1406664041. The next prime is 1406664047. The reversal of 1406664043 is 3404666041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1406664043 - 2¹ = 1406664041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1406664041) 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, 13270363 + ... + 13270468.

It is an arithmetic number, because the mean of its divisors is an integer number (358301232).

Almost surely, 2^1406664043 is an apocalyptic number.

1406664043 is a deficient number, since it is larger than the sum of its proper divisors (26540885).

1406664043 is an equidigital number, since it uses as much as digits as its factorization.

1406664043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26540884.

The product of its (nonzero) digits is 41472, while the sum is 34.

The square root of 1406664043 is about 37505.5201670367. The cubic root of 1406664043 is about 1120.4611310654.

The spelling of 1406664043 in words is "one billion, four hundred six million, six hundred sixty-four thousand, forty-three".