709243144 has 16 divisors (see below), whose sum is σ = 1341601020. Its totient is φ = 351482880.

The previous prime is 709243103. The next prime is 709243147. The reversal of 709243144 is 441342907.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 663680644 + 45562500 = 25762^2 + 6750^2 .

It is a super-2 number, since 2×709243144² = 1006051674622009472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (709243147) 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, 391377 + ... + 393184.

Almost surely, 2^709243144 is an apocalyptic number.

It is an amenable number.

709243144 is a deficient number, since it is larger than the sum of its proper divisors (632357876).

709243144 is a wasteful number, since it uses less digits than its factorization.

709243144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784680 (or 784676 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 709243144 is about 26631.6192523098. The cubic root of 709243144 is about 891.7950322352.

The spelling of 709243144 in words is "seven hundred nine million, two hundred forty-three thousand, one hundred forty-four".