3493951389 has 8 divisors (see below), whose sum is σ = 5176224320. Its totient is φ = 2329300908.

The previous prime is 3493951327. The next prime is 3493951451. The reversal of 3493951389 is 9831593943.

It is a happy number.

3493951389 is a `hidden beast` number, since 3 + 49 + 3 + 9 + 513 + 89 = 666.

3493951389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3493951327) and next prime (3493951451).

It is not a de Polignac number, because 3493951389 - 2⁷ = 3493951261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3493951589) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64702777 + ... + 64702830.

It is an arithmetic number, because the mean of its divisors is an integer number (647028040).

Almost surely, 2^3493951389 is an apocalyptic number.

It is an amenable number.

3493951389 is a deficient number, since it is larger than the sum of its proper divisors (1682272931).

3493951389 is a wasteful number, since it uses less digits than its factorization.

3493951389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129405616 (or 129405610 counting only the distinct ones).

The product of its digits is 3149280, while the sum is 54.

The square root of 3493951389 is about 59109.6556325614. The cubic root of 3493951389 is about 1517.4193556439.

The spelling of 3493951389 in words is "three billion, four hundred ninety-three million, nine hundred fifty-one thousand, three hundred eighty-nine".