40320789 has 8 divisors (see below), whose sum is σ = 53891040. Its totient is φ = 26815536.

The previous prime is 40320781. The next prime is 40320803. The reversal of 40320789 is 98702304.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40320789 - 2³ = 40320781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40320781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14782 + ... + 17295.

It is an arithmetic number, because the mean of its divisors is an integer number (6736380).

Almost surely, 2^40320789 is an apocalyptic number.

It is an amenable number.

40320789 is a deficient number, since it is larger than the sum of its proper divisors (13570251).

40320789 is a wasteful number, since it uses less digits than its factorization.

40320789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32499.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 40320789 is about 6349.8652741613. The cubic root of 40320789 is about 342.9069919831.

The spelling of 40320789 in words is "forty million, three hundred twenty thousand, seven hundred eighty-nine".