169396990397 has 8 divisors (see below), whose sum is σ = 177948403200. Its totient is φ = 160944438160.

The previous prime is 169396990327. The next prime is 169396990403. The reversal of 169396990397 is 793099693961.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-169396990397 is a prime.

It is a super-2 number, since 2×169396990397² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 169396990397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169396990327) 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, 24711629 + ... + 24718482.

It is an arithmetic number, because the mean of its divisors is an integer number (22243550400).

Almost surely, 2^169396990397 is an apocalyptic number.

It is an amenable number.

169396990397 is a deficient number, since it is larger than the sum of its proper divisors (8551412803).

169396990397 is a wasteful number, since it uses less digits than its factorization.

169396990397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49430283.

The product of its (nonzero) digits is 133923132, while the sum is 71.

The spelling of 169396990397 in words is "one hundred sixty-nine billion, three hundred ninety-six million, nine hundred ninety thousand, three hundred ninety-seven".