469038640 has 80 divisors (see below), whose sum is σ = 1280043072. Its totient is φ = 156460032.

The previous prime is 469038631. The next prime is 469038643. The reversal of 469038640 is 46830964.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 469038593 and 469038602.

It is not an unprimeable number, because it can be changed into a prime (469038643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9402 + ... + 32038.

Almost surely, 2^469038640 is an apocalyptic number.

469038640 is a gapful number since it is divisible by the number (40) 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 469038640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (640021536).

469038640 is an abundant number, since it is smaller than the sum of its proper divisors (811004432).

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

469038640 is a wasteful number, since it uses less digits than its factorization.

469038640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22694 (or 22688 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 469038640 is about 21657.2999240441. The cubic root of 469038640 is about 776.9675376113.

The spelling of 469038640 in words is "four hundred sixty-nine million, thirty-eight thousand, six hundred forty".