3897902220 has 48 divisors (see below), whose sum is σ = 10943449440. Its totient is φ = 1036647936.

The previous prime is 3897902167. The next prime is 3897902221. The reversal of 3897902220 is 222097983.

It is not an unprimeable number, because it can be changed into a prime (3897902221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64705 + ... + 109464.

It is an arithmetic number, because the mean of its divisors is an integer number (227988530).

Almost surely, 2^3897902220 is an apocalyptic number.

3897902220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3897902220 is an abundant number, since it is smaller than the sum of its proper divisors (7045547220).

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

3897902220 is a wasteful number, since it uses less digits than its factorization.

3897902220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174554 (or 174552 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 3897902220 is about 62433.1820428849. The cubic root of 3897902220 is about 1573.7786409278.

The spelling of 3897902220 in words is "three billion, eight hundred ninety-seven million, nine hundred two thousand, two hundred twenty".