7479359989 has 2 divisors, whose sum is σ = 7479359990. Its totient is φ = 7479359988.

The previous prime is 7479359977. The next prime is 7479360037. The reversal of 7479359989 is 9899539747.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3870955089 + 3608404900 = 62217^2 + 60070^2 .

It is a cyclic number.

It is not a de Polignac number, because 7479359989 - 2¹³ = 7479351797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7479359939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3739679994 + 3739679995.

It is an arithmetic number, because the mean of its divisors is an integer number (3739679995).

Almost surely, 2^7479359989 is an apocalyptic number.

It is an amenable number.

7479359989 is a deficient number, since it is larger than the sum of its proper divisors (1).

7479359989 is an equidigital number, since it uses as much as digits as its factorization.

7479359989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 154314720, while the sum is 70.

The square root of 7479359989 is about 86483.2931206947. The cubic root of 7479359989 is about 1955.6365506299.

The spelling of 7479359989 in words is "seven billion, four hundred seventy-nine million, three hundred fifty-nine thousand, nine hundred eighty-nine".