709090 has 16 divisors (see below), whose sum is σ = 1332288. Its totient is φ = 271216.

The previous prime is 709057. The next prime is 709097. The reversal of 709090 is 90907.

709090 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

709090 is a modest number, since divided by 9090 gives 70 as remainder.

It is not an unprimeable number, because it can be changed into a prime (709097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1312 + ... + 1771.

It is an arithmetic number, because the mean of its divisors is an integer number (83268).

2⁷⁰⁹⁰⁹⁰ is an apocalyptic number.

709090 is a deficient number, since it is larger than the sum of its proper divisors (623198).

709090 is a wasteful number, since it uses less digits than its factorization.

709090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3113.

The product of its (nonzero) digits is 567, while the sum is 25.

The square root of 709090 is about 842.0748185286. The cubic root of 709090 is about 89.1730840385.

Adding to 709090 its reverse (90907), we get a palindrome (799997).

The spelling of 709090 in words is "seven hundred nine thousand, ninety".