2909486478 has 16 divisors (see below), whose sum is σ = 5843120976. Its totient is φ = 965804160.

The previous prime is 2909486417. The next prime is 2909486479. The reversal of 2909486478 is 8746849092.

It is a super-2 number, since 2×2909486478² = 16930223131329688968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2909486479) 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 7 ways as a sum of consecutive naturals, for example, 1004601 + ... + 1007492.

It is an arithmetic number, because the mean of its divisors is an integer number (365195061).

Almost surely, 2^2909486478 is an apocalyptic number.

2909486478 is an abundant number, since it is smaller than the sum of its proper divisors (2933634498).

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

2909486478 is a wasteful number, since it uses less digits than its factorization.

2909486478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2012339.

The product of its (nonzero) digits is 6967296, while the sum is 57.

The square root of 2909486478 is about 53939.6558943418. The cubic root of 2909486478 is about 1427.5964118120.

The spelling of 2909486478 in words is "two billion, nine hundred nine million, four hundred eighty-six thousand, four hundred seventy-eight".