789780023 has 6 divisors (see below), whose sum is σ = 791610792. Its totient is φ = 787952060.

The previous prime is 789779971. The next prime is 789780029. The reversal of 789780023 is 320087987.

It is a happy number.

It is not a de Polignac number, because 789780023 - 2¹² = 789775927 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 (789780029) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 765518 + ... + 766548.

It is an arithmetic number, because the mean of its divisors is an integer number (131935132).

Almost surely, 2^789780023 is an apocalyptic number.

789780023 is a deficient number, since it is larger than the sum of its proper divisors (1830769).

789780023 is an frugal number, since it uses more digits than its factorization.

789780023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2805 (or 1774 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 44.

The square root of 789780023 is about 28103.0251574452. The cubic root of 789780023 is about 924.3477351469.

The spelling of 789780023 in words is "seven hundred eighty-nine million, seven hundred eighty thousand, twenty-three".