1423609893 has 12 divisors (see below), whose sum is σ = 2057587948. Its totient is φ = 948490560.

The previous prime is 1423609867. The next prime is 1423609919. The reversal of 1423609893 is 3989063241.

It is a happy number.

1423609893 is a `hidden beast` number, since 14 + 23 + 609 + 8 + 9 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (1423609867) and next prime (1423609919).

It can be written as a sum of positive squares in 2 ways, for example, as 693637569 + 729972324 = 26337^2 + 27018^2 .

It is not a de Polignac number, because 1423609893 - 2⁶ = 1423609829 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 (1423604893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32818 + ... + 62643.

Almost surely, 2^1423609893 is an apocalyptic number.

It is an amenable number.

1423609893 is a deficient number, since it is larger than the sum of its proper divisors (633978055).

1423609893 is a wasteful number, since it uses less digits than its factorization.

1423609893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97124 (or 97121 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 1423609893 is about 37730.7552667582. The cubic root of 1423609893 is about 1124.9425203225.

The spelling of 1423609893 in words is "one billion, four hundred twenty-three million, six hundred nine thousand, eight hundred ninety-three".