7289939249 has 4 divisors (see below), whose sum is σ = 7293047664. Its totient is φ = 7286830836.

The previous prime is 7289939231. The next prime is 7289939257. The reversal of 7289939249 is 9429399827.

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.

It is a cyclic number.

It is not a de Polignac number, because 7289939249 - 2²⁸ = 7021503793 is a prime.

It is a super-2 number, since 2×7289939249² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7289939191 and 7289939200.

It is not an unprimeable number, because it can be changed into a prime (7289939549) 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, 1550687 + ... + 1555380.

It is an arithmetic number, because the mean of its divisors is an integer number (1823261916).

Almost surely, 2^7289939249 is an apocalyptic number.

It is an amenable number.

7289939249 is a deficient number, since it is larger than the sum of its proper divisors (3108415).

7289939249 is a wasteful number, since it uses less digits than its factorization.

7289939249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3108414.

The product of its digits is 17635968, while the sum is 62.

The square root of 7289939249 is about 85381.1410617122. The cubic root of 7289939249 is about 1938.9858348383.

The spelling of 7289939249 in words is "seven billion, two hundred eighty-nine million, nine hundred thirty-nine thousand, two hundred forty-nine".