3990909216 has 96 divisors (see below), whose sum is σ = 12493329408. Its totient is φ = 1090679040.

The previous prime is 3990909199. The next prime is 3990909227. The reversal of 3990909216 is 6129090993.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113650 + ... + 144561.

It is an arithmetic number, because the mean of its divisors is an integer number (130138848).

Almost surely, 2^3990909216 is an apocalyptic number.

It is an amenable number.

3990909216 is an abundant number, since it is smaller than the sum of its proper divisors (8502420192).

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

3990909216 is a wasteful number, since it uses less digits than its factorization.

3990909216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258254 (or 258246 counting only the distinct ones).

The product of its (nonzero) digits is 236196, while the sum is 48.

The square root of 3990909216 is about 63173.6433649350. The cubic root of 3990909216 is about 1586.1975797914.

The spelling of 3990909216 in words is "three billion, nine hundred ninety million, nine hundred nine thousand, two hundred sixteen".