3445994989 has 2 divisors, whose sum is σ = 3445994990. Its totient is φ = 3445994988.

The previous prime is 3445994957. The next prime is 3445995001. The reversal of 3445994989 is 9894995443.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2692053225 + 753941764 = 51885^2 + 27458^2 .

It is a cyclic number.

It is not a de Polignac number, because 3445994989 - 2⁵ = 3445994957 is a prime.

It is a super-2 number, since 2×3445994989² = 23749762928426220242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3445994989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3445994089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1722997494 + 1722997495.

It is an arithmetic number, because the mean of its divisors is an integer number (1722997495).

Almost surely, 2^3445994989 is an apocalyptic number.

It is an amenable number.

3445994989 is a deficient number, since it is larger than the sum of its proper divisors (1).

3445994989 is an equidigital number, since it uses as much as digits as its factorization.

3445994989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50388480, while the sum is 64.

The square root of 3445994989 is about 58702.5978045265. The cubic root of 3445994989 is about 1510.4448770309. Note that the first 3 decimals are identical.

The spelling of 3445994989 in words is "three billion, four hundred forty-five million, nine hundred ninety-four thousand, nine hundred eighty-nine".