398883448779 has 8 divisors (see below), whose sum is σ = 531848001600. Its totient is φ = 265920597576.

The previous prime is 398883448757. The next prime is 398883448841. The reversal of 398883448779 is 977844388893.

It is a happy number.

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

It is not a de Polignac number, because 398883448779 - 2¹³ = 398883440587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (398883448679) 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, 296644 + ... + 941150.

It is an arithmetic number, because the mean of its divisors is an integer number (66481000200).

Almost surely, 2^398883448779 is an apocalyptic number.

398883448779 is a deficient number, since it is larger than the sum of its proper divisors (132964552821).

398883448779 is a wasteful number, since it uses less digits than its factorization.

398883448779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 850809.

The product of its digits is 2341011456, while the sum is 78.

The spelling of 398883448779 in words is "three hundred ninety-eight billion, eight hundred eighty-three million, four hundred forty-eight thousand, seven hundred seventy-nine".