7445139049 has 2 divisors, whose sum is σ = 7445139050. Its totient is φ = 7445139048.

The previous prime is 7445139047. The next prime is 7445139089. The reversal of 7445139049 is 9409315447.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7373313424 + 71825625 = 85868^2 + 8475^2 .

It is a cyclic number.

It is not a de Polignac number, because 7445139049 - 2¹ = 7445139047 is a prime.

Together with 7445139047, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (7445139043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3722569524 + 3722569525.

It is an arithmetic number, because the mean of its divisors is an integer number (3722569525).

Almost surely, 2^7445139049 is an apocalyptic number.

It is an amenable number.

7445139049 is a deficient number, since it is larger than the sum of its proper divisors (1).

7445139049 is an equidigital number, since it uses as much as digits as its factorization.

7445139049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 46.

The square root of 7445139049 is about 86285.2191803440. The cubic root of 7445139049 is about 1952.6493944817.

The spelling of 7445139049 in words is "seven billion, four hundred forty-five million, one hundred thirty-nine thousand, forty-nine".