147669439 has 4 divisors (see below), whose sum is σ = 151103656. Its totient is φ = 144235224.

The previous prime is 147669419. The next prime is 147669443. The reversal of 147669439 is 934966741.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 934966741 = 103 ⋅9077347.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-147669439 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 147669392 and 147669401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147669409) 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, 1717044 + ... + 1717129.

It is an arithmetic number, because the mean of its divisors is an integer number (37775914).

Almost surely, 2^147669439 is an apocalyptic number.

147669439 is a deficient number, since it is larger than the sum of its proper divisors (3434217).

147669439 is an equidigital number, since it uses as much as digits as its factorization.

147669439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3434216.

The product of its digits is 979776, while the sum is 49.

The square root of 147669439 is about 12151.9314925653. The cubic root of 147669439 is about 528.5631414646.

The spelling of 147669439 in words is "one hundred forty-seven million, six hundred sixty-nine thousand, four hundred thirty-nine".