219897442 has 16 divisors (see below), whose sum is σ = 338231520. Its totient is φ = 107164512.

The previous prime is 219897413. The next prime is 219897451. The reversal of 219897442 is 244798912.

It is a junction number, because it is equal to n+sod(n) for n = 219897392 and 219897401.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42534 + ... + 47422.

It is an arithmetic number, because the mean of its divisors is an integer number (21139470).

Almost surely, 2^219897442 is an apocalyptic number.

219897442 is a deficient number, since it is larger than the sum of its proper divisors (118334078).

219897442 is a wasteful number, since it uses less digits than its factorization.

219897442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5457.

The product of its digits is 290304, while the sum is 46.

The square root of 219897442 is about 14828.9393417061. The cubic root of 219897442 is about 603.5872525485.

The spelling of 219897442 in words is "two hundred nineteen million, eight hundred ninety-seven thousand, four hundred forty-two".