1405023009 has 8 divisors (see below), whose sum is σ = 2017468992. Its totient is φ = 864629520.

The previous prime is 1405023007. The next prime is 1405023023. The reversal of 1405023009 is 9003205041.

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

It is not a de Polignac number, because 1405023009 - 2¹ = 1405023007 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1405023009.

It is not an unprimeable number, because it can be changed into a prime (1405023007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18013077 + ... + 18013154.

It is an arithmetic number, because the mean of its divisors is an integer number (252183624).

Almost surely, 2^1405023009 is an apocalyptic number.

It is an amenable number.

1405023009 is a deficient number, since it is larger than the sum of its proper divisors (612445983).

1405023009 is a wasteful number, since it uses less digits than its factorization.

1405023009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36026247.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 1405023009 is about 37483.6365498333. The cubic root of 1405023009 is about 1120.0252462953.

The spelling of 1405023009 in words is "one billion, four hundred five million, twenty-three thousand, nine".