332640009 has 48 divisors (see below), whose sum is σ = 532756224. Its totient is φ = 198720000.

The previous prime is 332639981. The next prime is 332640017. The reversal of 332640009 is 900046233.

It is not a de Polignac number, because 332640009 - 2⁵ = 332639977 is a prime.

It is a super-2 number, since 2×332640009² = 221298751175040162, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (332640409) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1325134 + ... + 1325384.

It is an arithmetic number, because the mean of its divisors is an integer number (11099088).

Almost surely, 2^332640009 is an apocalyptic number.

332640009 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

332640009 is a deficient number, since it is larger than the sum of its proper divisors (200116215).

332640009 is a wasteful number, since it uses less digits than its factorization.

332640009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558 (or 555 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 332640009 is about 18238.4212310167. The cubic root of 332640009 is about 692.8802164238.

The spelling of 332640009 in words is "three hundred thirty-two million, six hundred forty thousand, nine".