3928454091 has 6 divisors (see below), whose sum is σ = 5674433700. Its totient is φ = 2618969388.

The previous prime is 3928454087. The next prime is 3928454113. The reversal of 3928454091 is 1904548293.

It is not a de Polignac number, because 3928454091 - 2² = 3928454087 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3928454051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 218247441 + ... + 218247458.

It is an arithmetic number, because the mean of its divisors is an integer number (945738950).

Almost surely, 2^3928454091 is an apocalyptic number.

3928454091 is a deficient number, since it is larger than the sum of its proper divisors (1745979609).

3928454091 is a wasteful number, since it uses less digits than its factorization.

3928454091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436494905 (or 436494902 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 3928454091 is about 62677.3810158019. The cubic root of 3928454091 is about 1577.8797189857.

The spelling of 3928454091 in words is "three billion, nine hundred twenty-eight million, four hundred fifty-four thousand, ninety-one".