3855021436 has 24 divisors (see below), whose sum is σ = 7716345056. Its totient is φ = 1650801600.

The previous prime is 3855021427. The next prime is 3855021481. The reversal of 3855021436 is 6341205583.

It is a super-2 number, since 2×3855021436² = 29722380544039004192, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3855021395 and 3855021404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21015 + ... + 90286.

Almost surely, 2^3855021436 is an apocalyptic number.

It is an amenable number.

3855021436 is an abundant number, since it is smaller than the sum of its proper divisors (3861323620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3855021436 is a wasteful number, since it uses less digits than its factorization.

3855021436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112549 (or 112547 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 3855021436 is about 62088.8189290149. The cubic root of 3855021436 is about 1567.9863071265.

The spelling of 3855021436 in words is "three billion, eight hundred fifty-five million, twenty-one thousand, four hundred thirty-six".