701090909 has 4 divisors (see below), whose sum is σ = 706442880. Its totient is φ = 695738940.

The previous prime is 701090893. The next prime is 701090987. The reversal of 701090909 is 909090107.

It is a happy number.

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 701090909 - 2⁴ = 701090893 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

701090909 is a modest number, since divided by 90909 gives 701 as remainder.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (701090609) 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, 2675789 + ... + 2676050.

It is an arithmetic number, because the mean of its divisors is an integer number (176610720).

Almost surely, 2^701090909 is an apocalyptic number.

It is an amenable number.

701090909 is a deficient number, since it is larger than the sum of its proper divisors (5351971).

701090909 is a wasteful number, since it uses less digits than its factorization.

701090909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5351970.

The product of its (nonzero) digits is 5103, while the sum is 35.

The square root of 701090909 is about 26478.1213268615. The cubic root of 701090909 is about 888.3650111337.

The spelling of 701090909 in words is "seven hundred one million, ninety thousand, nine hundred nine".