3500994069 has 14 divisors (see below), whose sum is σ = 5249090966. Its totient is φ = 2333995560.

The previous prime is 3500994067. The next prime is 3500994089. The reversal of 3500994069 is 9604990053.

It is a happy number.

3500994069 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2033108100 + 1467885969 = 45090^2 + 38313^2 .

It is not a de Polignac number, because 3500994069 - 2¹ = 3500994067 is a prime.

It is a super-2 number, since 2×3500994069² = 24513918942346353522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3500994061) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 2400502 + ... + 2401959.

It is an arithmetic number, because the mean of its divisors is an integer number (374935069).

Almost surely, 2^3500994069 is an apocalyptic number.

It is an amenable number.

3500994069 is a deficient number, since it is larger than the sum of its proper divisors (1748096897).

3500994069 is an frugal number, since it uses more digits than its factorization.

3500994069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4802479 (or 4802464 counting only the distinct ones).

The product of its (nonzero) digits is 262440, while the sum is 45.

The square root of 3500994069 is about 59169.1986509873. The cubic root of 3500994069 is about 1518.4382141868.

The spelling of 3500994069 in words is "three billion, five hundred million, nine hundred ninety-four thousand, sixty-nine".