423993064 has 64 divisors (see below), whose sum is σ = 899760960. Its totient is φ = 185610240.

The previous prime is 423993049. The next prime is 423993103. The reversal of 423993064 is 460399324.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 347784 + ... + 349000.

It is an arithmetic number, because the mean of its divisors is an integer number (14058765).

Almost surely, 2^423993064 is an apocalyptic number.

423993064 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423993064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (449880480).

423993064 is an abundant number, since it is smaller than the sum of its proper divisors (475767896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423993064 is a wasteful number, since it uses less digits than its factorization.

423993064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1378 (or 1374 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 40.

The square root of 423993064 is about 20591.0918603167. The cubic root of 423993064 is about 751.2530543442.

The spelling of 423993064 in words is "four hundred twenty-three million, nine hundred ninety-three thousand, sixty-four".