619953944 has 16 divisors (see below), whose sum is σ = 1193830800. Its totient is φ = 301599072.

The previous prime is 619953941. The next prime is 619953953. The reversal of 619953944 is 449359916.

It is a junction number, because it is equal to n+sod(n) for n = 619953892 and 619953901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (619953941) 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 3 ways as a sum of consecutive naturals, for example, 1046924 + ... + 1047515.

It is an arithmetic number, because the mean of its divisors is an integer number (74614425).

Almost surely, 2^619953944 is an apocalyptic number.

It is an amenable number.

619953944 is a deficient number, since it is larger than the sum of its proper divisors (573876856).

619953944 is a wasteful number, since it uses less digits than its factorization.

619953944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2094482 (or 2094478 counting only the distinct ones).

The product of its digits is 1049760, while the sum is 50.

The square root of 619953944 is about 24898.8743520666. The cubic root of 619953944 is about 852.6807838061.

The spelling of 619953944 in words is "six hundred nineteen million, nine hundred fifty-three thousand, nine hundred forty-four".