619979948 has 36 divisors (see below), whose sum is σ = 1279420632. Its totient is φ = 262059840.

The previous prime is 619979939. The next prime is 619979959. The reversal of 619979948 is 849979916.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7358 + ... + 35973.

It is an arithmetic number, because the mean of its divisors is an integer number (35539462).

Almost surely, 2^619979948 is an apocalyptic number.

It is an amenable number.

619979948 is an abundant number, since it is smaller than the sum of its proper divisors (659440684).

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

619979948 is a wasteful number, since it uses less digits than its factorization.

619979948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43422 (or 43413 counting only the distinct ones).

The product of its digits is 8817984, while the sum is 62.

The square root of 619979948 is about 24899.3965388722. The cubic root of 619979948 is about 852.6927055525.

The spelling of 619979948 in words is "six hundred nineteen million, nine hundred seventy-nine thousand, nine hundred forty-eight".