423779537 has 16 divisors (see below), whose sum is σ = 443042304. Its totient is φ = 405000000.

The previous prime is 423779513. The next prime is 423779539. The reversal of 423779537 is 735977324.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423779537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 423779491 and 423779500.

It is not an unprimeable number, because it can be changed into a prime (423779539) 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 15 ways as a sum of consecutive naturals, for example, 563912 + ... + 564662.

It is an arithmetic number, because the mean of its divisors is an integer number (27690144).

Almost surely, 2^423779537 is an apocalyptic number.

It is an amenable number.

423779537 is a deficient number, since it is larger than the sum of its proper divisors (19262767).

423779537 is a wasteful number, since it uses less digits than its factorization.

423779537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040.

The product of its digits is 1111320, while the sum is 47.

The square root of 423779537 is about 20585.9062710389. The cubic root of 423779537 is about 751.1269204043.

The spelling of 423779537 in words is "four hundred twenty-three million, seven hundred seventy-nine thousand, five hundred thirty-seven".