717242949 has 12 divisors (see below), whose sum is σ = 1042008396. Its totient is φ = 475396992.

The previous prime is 717242921. The next prime is 717242957. The reversal of 717242949 is 949242717.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 412496100 + 304746849 = 20310^2 + 17457^2 .

It is not a de Polignac number, because 717242949 - 2⁷ = 717242821 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (717242909) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 228772 + ... + 231885.

It is an arithmetic number, because the mean of its divisors is an integer number (86834033).

Almost surely, 2^717242949 is an apocalyptic number.

It is an amenable number.

717242949 is a deficient number, since it is larger than the sum of its proper divisors (324765447).

717242949 is a wasteful number, since it uses less digits than its factorization.

717242949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460836 (or 460833 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 717242949 is about 26781.3918420981. The cubic root of 717242949 is about 895.1354617430.

The spelling of 717242949 in words is "seven hundred seventeen million, two hundred forty-two thousand, nine hundred forty-nine".