399900617767 has 8 divisors (see below), whose sum is σ = 483913352736. Its totient is φ = 322608901632.

The previous prime is 399900617761. The next prime is 399900617773. The reversal of 399900617767 is 767716009993.

It is an interprime number because it is at equal distance from previous prime (399900617761) and next prime (399900617773).

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 399900617767 - 2³ = 399900617759 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 399900617699 and 399900617708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399900617761) 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, 1680254578 + ... + 1680254815.

It is an arithmetic number, because the mean of its divisors is an integer number (60489169092).

Almost surely, 2^399900617767 is an apocalyptic number.

399900617767 is a deficient number, since it is larger than the sum of its proper divisors (84012734969).

399900617767 is a wasteful number, since it uses less digits than its factorization.

399900617767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3360509417.

The product of its (nonzero) digits is 27005076, while the sum is 64.

The spelling of 399900617767 in words is "three hundred ninety-nine billion, nine hundred million, six hundred seventeen thousand, seven hundred sixty-seven".