619952399 has 4 divisors (see below), whose sum is σ = 676311720. Its totient is φ = 563593080.

The previous prime is 619952381. The next prime is 619952429. The reversal of 619952399 is 993259916.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 619952399 - 2²⁰ = 618903823 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 619952399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (619952369) 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, 28179644 + ... + 28179665.

It is an arithmetic number, because the mean of its divisors is an integer number (169077930).

Almost surely, 2^619952399 is an apocalyptic number.

619952399 is a deficient number, since it is larger than the sum of its proper divisors (56359321).

619952399 is a wasteful number, since it uses less digits than its factorization.

619952399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56359320.

The product of its digits is 1180980, while the sum is 53.

The square root of 619952399 is about 24898.8433265483. The cubic root of 619952399 is about 852.6800754777.

The spelling of 619952399 in words is "six hundred nineteen million, nine hundred fifty-two thousand, three hundred ninety-nine".