780709493 has 16 divisors (see below), whose sum is σ = 844905600. Its totient is φ = 719167680.

The previous prime is 780709483. The next prime is 780709499. The reversal of 780709493 is 394907087.

It is not a de Polignac number, because 780709493 - 2⁴ = 780709477 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 (780709499) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 306218 + ... + 308756.

It is an arithmetic number, because the mean of its divisors is an integer number (52806600).

Almost surely, 2^780709493 is an apocalyptic number.

It is an amenable number.

780709493 is a deficient number, since it is larger than the sum of its proper divisors (64196107).

780709493 is a wasteful number, since it uses less digits than its factorization.

780709493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3052.

The product of its (nonzero) digits is 381024, while the sum is 47.

The square root of 780709493 is about 27941.1791626624. The cubic root of 780709493 is about 920.7954262117.

The spelling of 780709493 in words is "seven hundred eighty million, seven hundred nine thousand, four hundred ninety-three".