405079789 has 8 divisors (see below), whose sum is σ = 412848128. Its totient is φ = 397362240.

The previous prime is 405079783. The next prime is 405079799. The reversal of 405079789 is 987970504.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 405079789 - 2¹⁵ = 405047021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405079783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3604 + ... + 28690.

It is an arithmetic number, because the mean of its divisors is an integer number (51606016).

Almost surely, 2^405079789 is an apocalyptic number.

It is an amenable number.

405079789 is a deficient number, since it is larger than the sum of its proper divisors (7768339).

405079789 is a wasteful number, since it uses less digits than its factorization.

405079789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25395.

The product of its (nonzero) digits is 635040, while the sum is 49.

The square root of 405079789 is about 20126.5940735138. The cubic root of 405079789 is about 739.9122059224.

The spelling of 405079789 in words is "four hundred five million, seventy-nine thousand, seven hundred eighty-nine".