196004639 has 2 divisors, whose sum is σ = 196004640. Its totient is φ = 196004638.

The previous prime is 196004623. The next prime is 196004647. The reversal of 196004639 is 936400691.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 196004639 - 2⁴ = 196004623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196004839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98002319 + 98002320.

It is an arithmetic number, because the mean of its divisors is an integer number (98002320).

Almost surely, 2^196004639 is an apocalyptic number.

196004639 is a deficient number, since it is larger than the sum of its proper divisors (1).

196004639 is an equidigital number, since it uses as much as digits as its factorization.

196004639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 196004639 is about 14000.1656775911. The cubic root of 196004639 is about 580.8831561360.

The spelling of 196004639 in words is "one hundred ninety-six million, four thousand, six hundred thirty-nine".