1219400099 has 8 divisors (see below), whose sum is σ = 1228593408. Its totient is φ = 1210229640.

The previous prime is 1219400093. The next prime is 1219400129. The reversal of 1219400099 is 9900049121.

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

It is a cyclic number.

It is not a de Polignac number, because 1219400099 - 2²⁰ = 1218351523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1219400093) 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, 110114 + ... + 120680.

It is an arithmetic number, because the mean of its divisors is an integer number (153574176).

Almost surely, 2^1219400099 is an apocalyptic number.

1219400099 is a deficient number, since it is larger than the sum of its proper divisors (9193309).

1219400099 is a wasteful number, since it uses less digits than its factorization.

1219400099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11425.

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 1219400099 is about 34919.9097793794. The cubic root of 1219400099 is about 1068.3545615289.

The spelling of 1219400099 in words is "one billion, two hundred nineteen million, four hundred thousand, ninety-nine".