11899942469 has 8 divisors (see below), whose sum is σ = 12481674432. Its totient is φ = 11323572480.

The previous prime is 11899942429. The next prime is 11899942471. The reversal of 11899942469 is 96424999811.

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

It is not a de Polignac number, because 11899942469 - 2²⁴ = 11883165253 is a prime.

It is a super-2 number, since 2×11899942469² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11899942429) 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, 1335947 + ... + 1344824.

It is an arithmetic number, because the mean of its divisors is an integer number (1560209304).

Almost surely, 2^11899942469 is an apocalyptic number.

It is an amenable number.

11899942469 is a deficient number, since it is larger than the sum of its proper divisors (581731963).

11899942469 is a wasteful number, since it uses less digits than its factorization.

11899942469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2680987.

The product of its digits is 10077696, while the sum is 62.

The spelling of 11899942469 in words is "eleven billion, eight hundred ninety-nine million, nine hundred forty-two thousand, four hundred sixty-nine".