196623949 has 4 divisors (see below), whose sum is σ = 198461664. Its totient is φ = 194786236.

The previous prime is 196623943. The next prime is 196623953. The reversal of 196623949 is 949326691.

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 196623949 - 2²⁷ = 62406221 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 (196623943) 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, 918697 + ... + 918910.

It is an arithmetic number, because the mean of its divisors is an integer number (49615416).

Almost surely, 2^196623949 is an apocalyptic number.

It is an amenable number.

196623949 is a deficient number, since it is larger than the sum of its proper divisors (1837715).

196623949 is a wasteful number, since it uses less digits than its factorization.

196623949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1837714.

The product of its digits is 629856, while the sum is 49.

The square root of 196623949 is about 14022.2661863195. The cubic root of 196623949 is about 581.4943126190.

The spelling of 196623949 in words is "one hundred ninety-six million, six hundred twenty-three thousand, nine hundred forty-nine".