3721955349 has 12 divisors (see below), whose sum is σ = 5671977056. Its totient is φ = 2126671872.

The previous prime is 3721955227. The next prime is 3721955371. The reversal of 3721955349 is 9435591273.

It is not a de Polignac number, because 3721955349 - 2¹³ = 3721947157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3721955298 and 3721955307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3721955849) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 272917 + ... + 286229.

Almost surely, 2^3721955349 is an apocalyptic number.

It is an amenable number.

3721955349 is a deficient number, since it is larger than the sum of its proper divisors (1950021707).

3721955349 is an frugal number, since it uses more digits than its factorization.

3721955349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26636 (or 13323 counting only the distinct ones).

The product of its digits is 1020600, while the sum is 48.

The square root of 3721955349 is about 61007.8302269471. The cubic root of 3721955349 is about 1549.7336134647.

The spelling of 3721955349 in words is "three billion, seven hundred twenty-one million, nine hundred fifty-five thousand, three hundred forty-nine".