147766489 has 4 divisors (see below), whose sum is σ = 159133156. Its totient is φ = 136399824.

The previous prime is 147766483. The next prime is 147766517. The reversal of 147766489 is 984667741.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 984667741 = 109 ⋅9033649.

It can be written as a sum of positive squares in 2 ways, for example, as 33640000 + 114126489 = 5800^2 + 10683^2 .

It is a cyclic number.

It is not a de Polignac number, because 147766489 - 2⁵ = 147766457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (147766483) 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, 5683314 + ... + 5683339.

It is an arithmetic number, because the mean of its divisors is an integer number (39783289).

Almost surely, 2^147766489 is an apocalyptic number.

It is an amenable number.

147766489 is a deficient number, since it is larger than the sum of its proper divisors (11366667).

147766489 is a wasteful number, since it uses less digits than its factorization.

147766489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11366666.

The product of its digits is 2032128, while the sum is 52.

The square root of 147766489 is about 12155.9240290486. The cubic root of 147766489 is about 528.6789086349.

The spelling of 147766489 in words is "one hundred forty-seven million, seven hundred sixty-six thousand, four hundred eighty-nine".