708138349 has 4 divisors (see below), whose sum is σ = 749793564. Its totient is φ = 666483136.

The previous prime is 708138337. The next prime is 708138401. The reversal of 708138349 is 943831807.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 454755625 + 253382724 = 21325^2 + 15918^2 .

It is a cyclic number.

It is not a de Polignac number, because 708138349 - 2⁵ = 708138317 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 (708148349) 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, 20827582 + ... + 20827615.

It is an arithmetic number, because the mean of its divisors is an integer number (187448391).

Almost surely, 2^708138349 is an apocalyptic number.

It is an amenable number.

708138349 is a deficient number, since it is larger than the sum of its proper divisors (41655215).

708138349 is a wasteful number, since it uses less digits than its factorization.

708138349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41655214.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 708138349 is about 26610.8690012183. The cubic root of 708138349 is about 891.3317389709.

The spelling of 708138349 in words is "seven hundred eight million, one hundred thirty-eight thousand, three hundred forty-nine".