3445889729 has 2 divisors, whose sum is σ = 3445889730. Its totient is φ = 3445889728.

The previous prime is 3445889719. The next prime is 3445889767. The reversal of 3445889729 is 9279885443.

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., 2059072129 + 1386817600 = 45377^2 + 37240^2 .

It is an emirp because it is prime and its reverse (9279885443) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3445889729 is a prime.

It is not a weakly prime, because it can be changed into another prime (3445889719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1722944864 + 1722944865.

It is an arithmetic number, because the mean of its divisors is an integer number (1722944865).

Almost surely, 2^3445889729 is an apocalyptic number.

It is an amenable number.

3445889729 is a deficient number, since it is larger than the sum of its proper divisors (1).

3445889729 is an equidigital number, since it uses as much as digits as its factorization.

3445889729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17418240, while the sum is 59.

The square root of 3445889729 is about 58701.7012445125. The cubic root of 3445889729 is about 1510.4294977237.

The spelling of 3445889729 in words is "three billion, four hundred forty-five million, eight hundred eighty-nine thousand, seven hundred twenty-nine".