399297099653 has 16 divisors (see below), whose sum is σ = 404792794560. Its totient is φ = 393844464000.

The previous prime is 399297099647. The next prime is 399297099667. The reversal of 399297099653 is 356990792993.

It is a cyclic number.

It is not a de Polignac number, because 399297099653 - 2¹² = 399297095557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399297099613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18018326 + ... + 18040472.

It is an arithmetic number, because the mean of its divisors is an integer number (25299549660).

Almost surely, 2^399297099653 is an apocalyptic number.

It is an amenable number.

399297099653 is a deficient number, since it is larger than the sum of its proper divisors (5495694907).

399297099653 is a wasteful number, since it uses less digits than its factorization.

399297099653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23108.

The product of its (nonzero) digits is 223205220, while the sum is 71.

The spelling of 399297099653 in words is "three hundred ninety-nine billion, two hundred ninety-seven million, ninety-nine thousand, six hundred fifty-three".