169800397 has 16 divisors (see below), whose sum is σ = 194037760. Its totient is φ = 147292992.

The previous prime is 169800353. The next prime is 169800419. The reversal of 169800397 is 793008961.

It is a cyclic number.

It is not a de Polignac number, because 169800397 - 2⁷ = 169800269 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 (169800347) 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, 28663 + ... + 34075.

It is an arithmetic number, because the mean of its divisors is an integer number (12127360).

Almost surely, 2^169800397 is an apocalyptic number.

It is an amenable number.

169800397 is a deficient number, since it is larger than the sum of its proper divisors (24237363).

169800397 is a wasteful number, since it uses less digits than its factorization.

169800397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5572.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 169800397 is about 13030.7481366190. The cubic root of 169800397 is about 553.7489304893.

The spelling of 169800397 in words is "one hundred sixty-nine million, eight hundred thousand, three hundred ninety-seven".