399396291841 has 8 divisors (see below), whose sum is σ = 416768664384. Its totient is φ = 382024529040.

The previous prime is 399396291817. The next prime is 399396291863. The reversal of 399396291841 is 148192693993.

It is a happy number.

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 399396291841 - 2¹¹ = 399396289793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (399396291241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1629370 + ... + 1858396.

It is an arithmetic number, because the mean of its divisors is an integer number (52096083048).

Almost surely, 2^399396291841 is an apocalyptic number.

It is an amenable number.

399396291841 is a deficient number, since it is larger than the sum of its proper divisors (17372372543).

399396291841 is a wasteful number, since it uses less digits than its factorization.

399396291841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304871.

The product of its digits is 22674816, while the sum is 64.

The spelling of 399396291841 in words is "three hundred ninety-nine billion, three hundred ninety-six million, two hundred ninety-one thousand, eight hundred forty-one".