7249193989 has 2 divisors, whose sum is σ = 7249193990. Its totient is φ = 7249193988.

The previous prime is 7249193953. The next prime is 7249193993. The reversal of 7249193989 is 9893919427.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5513805025 + 1735388964 = 74255^2 + 41658^2 .

It is a cyclic number.

It is not a de Polignac number, because 7249193989 - 2²³ = 7240805381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7249193999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3624596994 + 3624596995.

It is an arithmetic number, because the mean of its divisors is an integer number (3624596995).

Almost surely, 2^7249193989 is an apocalyptic number.

It is an amenable number.

7249193989 is a deficient number, since it is larger than the sum of its proper divisors (1).

7249193989 is an equidigital number, since it uses as much as digits as its factorization.

7249193989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8817984, while the sum is 61.

The square root of 7249193989 is about 85142.1986385130. The cubic root of 7249193989 is about 1935.3665942270.

The spelling of 7249193989 in words is "seven billion, two hundred forty-nine million, one hundred ninety-three thousand, nine hundred eighty-nine".