169225887 has 4 divisors (see below), whose sum is σ = 225634520. Its totient is φ = 112817256.

The previous prime is 169225883. The next prime is 169225891. The reversal of 169225887 is 788522961.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (169225883) and next prime (169225891).

It is not a de Polignac number, because 169225887 - 2² = 169225883 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 (169225883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28204312 + ... + 28204317.

It is an arithmetic number, because the mean of its divisors is an integer number (56408630).

Almost surely, 2^169225887 is an apocalyptic number.

169225887 is a deficient number, since it is larger than the sum of its proper divisors (56408633).

169225887 is an equidigital number, since it uses as much as digits as its factorization.

169225887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56408632.

The product of its digits is 483840, while the sum is 48.

The square root of 169225887 is about 13008.6850603741. The cubic root of 169225887 is about 553.1236987936.

The spelling of 169225887 in words is "one hundred sixty-nine million, two hundred twenty-five thousand, eight hundred eighty-seven".