196439747 has 8 divisors (see below), whose sum is σ = 227665152. Its totient is φ = 166005000.

The previous prime is 196439723. The next prime is 196439753. The reversal of 196439747 is 747934691.

It is a happy number.

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

It is not a de Polignac number, because 196439747 - 2⁸ = 196439491 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 196439695 and 196439704.

It is not an unprimeable number, because it can be changed into a prime (196439717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197129 + ... + 198122.

It is an arithmetic number, because the mean of its divisors is an integer number (28458144).

Almost surely, 2^196439747 is an apocalyptic number.

196439747 is a deficient number, since it is larger than the sum of its proper divisors (31225405).

196439747 is an equidigital number, since it uses as much as digits as its factorization.

196439747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395329.

The product of its digits is 1143072, while the sum is 50.

The square root of 196439747 is about 14015.6964507655. The cubic root of 196439747 is about 581.3126699761.

The spelling of 196439747 in words is "one hundred ninety-six million, four hundred thirty-nine thousand, seven hundred forty-seven".