169490452 has 12 divisors (see below), whose sum is σ = 301471156. Its totient is φ = 83355840.

The previous prime is 169490429. The next prime is 169490467. The reversal of 169490452 is 254094961.

It can be written as a sum of positive squares in 2 ways, for example, as 9821956 + 159668496 = 3134^2 + 12636^2 .

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 347073 + ... + 347560.

Almost surely, 2^169490452 is an apocalyptic number.

It is an amenable number.

169490452 is a deficient number, since it is larger than the sum of its proper divisors (131980704).

169490452 is a wasteful number, since it uses less digits than its factorization.

169490452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694698 (or 694696 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 169490452 is about 13018.8498723966. The cubic root of 169490452 is about 553.4117969086.

The spelling of 169490452 in words is "one hundred sixty-nine million, four hundred ninety thousand, four hundred fifty-two".