909919016409 has 8 divisors (see below), whose sum is σ = 1306550382592. Its totient is φ = 559950163920.

The previous prime is 909919016399. The next prime is 909919016411. The reversal of 909919016409 is 904610919909.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 909919016409 - 2⁹ = 909919015897 is a prime.

It is a super-2 number, since 2×909919016409² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (909919011409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11665628377 + ... + 11665628454.

It is an arithmetic number, because the mean of its divisors is an integer number (163318797824).

Almost surely, 2^909919016409 is an apocalyptic number.

It is an amenable number.

909919016409 is a deficient number, since it is larger than the sum of its proper divisors (396631366183).

909919016409 is a wasteful number, since it uses less digits than its factorization.

909919016409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23331256847.

The product of its (nonzero) digits is 1417176, while the sum is 57.

The spelling of 909919016409 in words is "nine hundred nine billion, nine hundred nineteen million, sixteen thousand, four hundred nine".