398599036681 has 8 divisors (see below), whose sum is σ = 400473030528. Its totient is φ = 396729438000.

The previous prime is 398599036679. The next prime is 398599036729. The reversal of 398599036681 is 186630995893.

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 398599036681 - 2¹ = 398599036679 is a prime.

It is a super-2 number, since 2×398599036681² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (398599036181) 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, 916915 + ... + 1279816.

It is an arithmetic number, because the mean of its divisors is an integer number (50059128816).

Almost surely, 2^398599036681 is an apocalyptic number.

It is an amenable number.

398599036681 is a deficient number, since it is larger than the sum of its proper divisors (1873993847).

398599036681 is a wasteful number, since it uses less digits than its factorization.

398599036681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2197583.

The product of its (nonzero) digits is 75582720, while the sum is 67.

The spelling of 398599036681 in words is "three hundred ninety-eight billion, five hundred ninety-nine million, thirty-six thousand, six hundred eighty-one".