3806762421 has 24 divisors (see below), whose sum is σ = 6441129504. Its totient is φ = 1977538080.

The previous prime is 3806762413. The next prime is 3806762441. The reversal of 3806762421 is 1242676083.

It is a happy number.

It is not a de Polignac number, because 3806762421 - 2³ = 3806762413 is a prime.

It is a super-3 number, since 3×3806762421³ (a number of 30 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3806762421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3806762441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1175490 + ... + 1178723.

It is an arithmetic number, because the mean of its divisors is an integer number (268380396).

Almost surely, 2^3806762421 is an apocalyptic number.

It is an amenable number.

3806762421 is a deficient number, since it is larger than the sum of its proper divisors (2634367083).

3806762421 is a wasteful number, since it uses less digits than its factorization.

3806762421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2354241 (or 2354234 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 3806762421 is about 61698.9661258598. The cubic root of 3806762421 is about 1561.4158771816.

The spelling of 3806762421 in words is "three billion, eight hundred six million, seven hundred sixty-two thousand, four hundred twenty-one".