219796949 has 4 divisors (see below), whose sum is σ = 219862464. Its totient is φ = 219731436.

The previous prime is 219796933. The next prime is 219796979. The reversal of 219796949 is 949697912.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 219796949 - 2⁴ = 219796933 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 219796894 and 219796903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (219796919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27437 + ... + 34530.

It is an arithmetic number, because the mean of its divisors is an integer number (54965616).

Almost surely, 2^219796949 is an apocalyptic number.

It is an amenable number.

219796949 is a deficient number, since it is larger than the sum of its proper divisors (65515).

219796949 is an equidigital number, since it uses as much as digits as its factorization.

219796949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65514.

The product of its digits is 2204496, while the sum is 56.

The square root of 219796949 is about 14825.5505462698. The cubic root of 219796949 is about 603.4952922002.

The spelling of 219796949 in words is "two hundred nineteen million, seven hundred ninety-six thousand, nine hundred forty-nine".