219400309492 has 48 divisors (see below), whose sum is σ = 477233350272. Its totient is φ = 85936348800.

The previous prime is 219400309489. The next prime is 219400309511. The reversal of 219400309492 is 294903004912.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2947138 + ... + 3020665.

It is an arithmetic number, because the mean of its divisors is an integer number (9942361464).

Almost surely, 2^219400309492 is an apocalyptic number.

It is an amenable number.

219400309492 is an abundant number, since it is smaller than the sum of its proper divisors (257833040780).

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

219400309492 is a wasteful number, since it uses less digits than its factorization.

219400309492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5967928 (or 5967926 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 43.

The spelling of 219400309492 in words is "two hundred nineteen billion, four hundred million, three hundred nine thousand, four hundred ninety-two".