3723955421 has 16 divisors (see below), whose sum is σ = 3891957888. Its totient is φ = 3560371200.

The previous prime is 3723955409. The next prime is 3723955441. The reversal of 3723955421 is 1245593273.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3723955421 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3723955441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 405086 + ... + 414176.

It is an arithmetic number, because the mean of its divisors is an integer number (243247368).

Almost surely, 2^3723955421 is an apocalyptic number.

It is an amenable number.

3723955421 is a deficient number, since it is larger than the sum of its proper divisors (168002467).

3723955421 is a wasteful number, since it uses less digits than its factorization.

3723955421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9332.

The product of its digits is 226800, while the sum is 41.

The square root of 3723955421 is about 61024.2199540478. The cubic root of 3723955421 is about 1550.0111578801.

The spelling of 3723955421 in words is "three billion, seven hundred twenty-three million, nine hundred fifty-five thousand, four hundred twenty-one".