3906147920 has 40 divisors (see below), whose sum is σ = 9085017480. Its totient is φ = 1561904640.

The previous prime is 3906147899. The next prime is 3906147943. The reversal of 3906147920 is 297416093.

It can be written as a sum of positive squares in 4 ways, for example, as 1202979856 + 2703168064 = 34684^2 + 51992^2 .

It is a tau number, because it is divible by the number of its divisors (40).

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, 276386 + ... + 290174.

It is an arithmetic number, because the mean of its divisors is an integer number (227125437).

Almost surely, 2^3906147920 is an apocalyptic number.

It is an amenable number.

3906147920 is an abundant number, since it is smaller than the sum of its proper divisors (5178869560).

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

3906147920 is a wasteful number, since it uses less digits than its factorization.

3906147920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17343 (or 17337 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 3906147920 is about 62499.1833546647. The cubic root of 3906147920 is about 1574.8875935567.

The spelling of 3906147920 in words is "three billion, nine hundred six million, one hundred forty-seven thousand, nine hundred twenty".