169997461 has 4 divisors (see below), whose sum is σ = 171123424. Its totient is φ = 168871500.

The previous prime is 169997453. The next prime is 169997479. The reversal of 169997461 is 164799961.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 169997461 - 2³ = 169997453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 169997399 and 169997408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169997431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 562755 + ... + 563056.

It is an arithmetic number, because the mean of its divisors is an integer number (42780856).

Almost surely, 2^169997461 is an apocalyptic number.

It is an amenable number.

169997461 is a deficient number, since it is larger than the sum of its proper divisors (1125963).

169997461 is a wasteful number, since it uses less digits than its factorization.

169997461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1125962.

The product of its digits is 734832, while the sum is 52.

The square root of 169997461 is about 13038.3074438364. The cubic root of 169997461 is about 553.9630677809.

The spelling of 169997461 in words is "one hundred sixty-nine million, nine hundred ninety-seven thousand, four hundred sixty-one".