709819949 has 4 divisors (see below), whose sum is σ = 709875936. Its totient is φ = 709763964.

The previous prime is 709819933. The next prime is 709819967. The reversal of 709819949 is 949918907.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 949918907 = 7 ⋅135702701.

It is a cyclic number.

It is not a de Polignac number, because 709819949 - 2⁴ = 709819933 is a prime.

It is a super-3 number, since 3×709819949³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 709819894 and 709819903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (709819969) 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, 1112 + ... + 37694.

It is an arithmetic number, because the mean of its divisors is an integer number (177468984).

Almost surely, 2^709819949 is an apocalyptic number.

It is an amenable number.

709819949 is a deficient number, since it is larger than the sum of its proper divisors (55987).

709819949 is a wasteful number, since it uses less digits than its factorization.

709819949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55986.

The product of its (nonzero) digits is 1469664, while the sum is 56.

The square root of 709819949 is about 26642.4463779136. The cubic root of 709819949 is about 892.0367229514.

The spelling of 709819949 in words is "seven hundred nine million, eight hundred nineteen thousand, nine hundred forty-nine".