709628397 has 16 divisors (see below), whose sum is σ = 998669760. Its totient is φ = 446971392.

The previous prime is 709628371. The next prime is 709628431. The reversal of 709628397 is 793826907.

It is not a de Polignac number, because 709628397 - 2⁶ = 709628333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (709628317) 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, 4573 + ... + 37949.

It is an arithmetic number, because the mean of its divisors is an integer number (62416860).

Almost surely, 2^709628397 is an apocalyptic number.

It is an amenable number.

709628397 is a deficient number, since it is larger than the sum of its proper divisors (289041363).

709628397 is a wasteful number, since it uses less digits than its factorization.

709628397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33772.

The product of its (nonzero) digits is 1143072, while the sum is 51.

The square root of 709628397 is about 26638.8512702782. The cubic root of 709628397 is about 891.9564740604.

The spelling of 709628397 in words is "seven hundred nine million, six hundred twenty-eight thousand, three hundred ninety-seven".