194220487 has 8 divisors (see below), whose sum is σ = 209203200. Its totient is φ = 179782680.

The previous prime is 194220479. The next prime is 194220491. The reversal of 194220487 is 784022491.

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 194220487 - 2³ = 194220479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194221487) 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, 135487 + ... + 136912.

It is an arithmetic number, because the mean of its divisors is an integer number (26150400).

Almost surely, 2^194220487 is an apocalyptic number.

194220487 is a deficient number, since it is larger than the sum of its proper divisors (14982713).

194220487 is a wasteful number, since it uses less digits than its factorization.

194220487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272453.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 194220487 is about 13936.3010515703. The cubic root of 194220487 is about 579.1152652575.

The spelling of 194220487 in words is "one hundred ninety-four million, two hundred twenty thousand, four hundred eighty-seven".