701942809 has 4 divisors (see below), whose sum is σ = 702714240. Its totient is φ = 701171380.

The previous prime is 701942789. The next prime is 701942831. The reversal of 701942809 is 908249107.

701942809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 701942809 - 2¹³ = 701934617 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (701942209) 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, 384349 + ... + 386170.

It is an arithmetic number, because the mean of its divisors is an integer number (175678560).

Almost surely, 2^701942809 is an apocalyptic number.

It is an amenable number.

701942809 is a deficient number, since it is larger than the sum of its proper divisors (771431).

701942809 is an equidigital number, since it uses as much as digits as its factorization.

701942809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771430.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 701942809 is about 26494.2033094034. The cubic root of 701942809 is about 888.7246848080.

The spelling of 701942809 in words is "seven hundred one million, nine hundred forty-two thousand, eight hundred nine".