398411779 has 8 divisors (see below), whose sum is σ = 444050640. Its totient is φ = 355239936.

The previous prime is 398411749. The next prime is 398411789. The reversal of 398411779 is 977114893.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 398411779 - 2¹³ = 398403587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (398411729) 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, 616414 + ... + 617059.

It is an arithmetic number, because the mean of its divisors is an integer number (55506330).

Almost surely, 2^398411779 is an apocalyptic number.

398411779 is a deficient number, since it is larger than the sum of its proper divisors (45638861).

398411779 is a wasteful number, since it uses less digits than its factorization.

398411779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1233509.

The product of its digits is 381024, while the sum is 49.

The square root of 398411779 is about 19960.2549833413. The cubic root of 398411779 is about 735.8298301792.

The spelling of 398411779 in words is "three hundred ninety-eight million, four hundred eleven thousand, seven hundred seventy-nine".