393689101 has 16 divisors (see below), whose sum is σ = 447664000. Its totient is φ = 343217088.

The previous prime is 393689099. The next prime is 393689113. The reversal of 393689101 is 101986393.

It is a cyclic number.

It is not a de Polignac number, because 393689101 - 2¹ = 393689099 is a prime.

It is a super-2 number, since 2×393689101² = 309982216492376402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393689161) 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, 83920 + ... + 88486.

It is an arithmetic number, because the mean of its divisors is an integer number (27979000).

Almost surely, 2^393689101 is an apocalyptic number.

It is an amenable number.

393689101 is a deficient number, since it is larger than the sum of its proper divisors (53974899).

393689101 is a wasteful number, since it uses less digits than its factorization.

393689101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4948.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 393689101 is about 19841.6002630836. The cubic root of 393689101 is about 732.9108155388.

The spelling of 393689101 in words is "three hundred ninety-three million, six hundred eighty-nine thousand, one hundred one".