1423811709 has 8 divisors (see below), whose sum is σ = 2109350720. Its totient is φ = 949207788.

The previous prime is 1423811699. The next prime is 1423811713. The reversal of 1423811709 is 9071183241.

It is a happy number.

It is not a de Polignac number, because 1423811709 - 2⁵ = 1423811677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423811789) 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, 26366857 + ... + 26366910.

It is an arithmetic number, because the mean of its divisors is an integer number (263668840).

Almost surely, 2^1423811709 is an apocalyptic number.

It is an amenable number.

1423811709 is a deficient number, since it is larger than the sum of its proper divisors (685539011).

1423811709 is an equidigital number, since it uses as much as digits as its factorization.

1423811709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52733776 (or 52733770 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 1423811709 is about 37733.4295949891. The cubic root of 1423811709 is about 1124.9956764278.

The spelling of 1423811709 in words is "one billion, four hundred twenty-three million, eight hundred eleven thousand, seven hundred nine".