40329789 has 4 divisors (see below), whose sum is σ = 53773056. Its totient is φ = 26886524.

The previous prime is 40329781. The next prime is 40329803. The reversal of 40329789 is 98792304.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40329789 - 2³ = 40329781 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40329789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40329781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6721629 + ... + 6721634.

It is an arithmetic number, because the mean of its divisors is an integer number (13443264).

Almost surely, 2^40329789 is an apocalyptic number.

It is an amenable number.

40329789 is a deficient number, since it is larger than the sum of its proper divisors (13443267).

40329789 is a wasteful number, since it uses less digits than its factorization.

40329789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13443266.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 40329789 is about 6350.5739110729. The cubic root of 40329789 is about 342.9325034989.

The spelling of 40329789 in words is "forty million, three hundred twenty-nine thousand, seven hundred eighty-nine".