423689910 has 64 divisors (see below), whose sum is σ = 1179505152. Its totient is φ = 95394816.

The previous prime is 423689909. The next prime is 423689921. The reversal of 423689910 is 19986324.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 987 + ... + 29126.

It is an arithmetic number, because the mean of its divisors is an integer number (18429768).

Almost surely, 2^423689910 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423689910, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (589752576).

423689910 is an abundant number, since it is smaller than the sum of its proper divisors (755815242).

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

423689910 is a wasteful number, since it uses less digits than its factorization.

423689910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30197.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 423689910 is about 20583.7292539520. The cubic root of 423689910 is about 751.0739636244.

The spelling of 423689910 in words is "four hundred twenty-three million, six hundred eighty-nine thousand, nine hundred ten".