619949408 has 48 divisors (see below), whose sum is σ = 1356840576. Its totient is φ = 276894720.

The previous prime is 619949401. The next prime is 619949417. The reversal of 619949408 is 804949916.

It is a happy number.

619949408 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (619949401) 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, 11141 + ... + 36932.

It is an arithmetic number, because the mean of its divisors is an integer number (28267512).

Almost surely, 2^619949408 is an apocalyptic number.

It is an amenable number.

619949408 is an abundant number, since it is smaller than the sum of its proper divisors (736891168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

619949408 is a wasteful number, since it uses less digits than its factorization.

619949408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48127 (or 48119 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 50.

The square root of 619949408 is about 24898.7832634448. The cubic root of 619949408 is about 852.6787042056.

The spelling of 619949408 in words is "six hundred nineteen million, nine hundred forty-nine thousand, four hundred eight".