147391487 has 4 divisors (see below), whose sum is σ = 150819240. Its totient is φ = 143963736.

The previous prime is 147391481. The next prime is 147391511. The reversal of 147391487 is 784193741.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 784193741 = 1097 ⋅714853.

It is a cyclic number.

It is not a de Polignac number, because 147391487 - 2⁴ = 147391471 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 (147391481) 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, 1713812 + ... + 1713897.

It is an arithmetic number, because the mean of its divisors is an integer number (37704810).

Almost surely, 2^147391487 is an apocalyptic number.

147391487 is a deficient number, since it is larger than the sum of its proper divisors (3427753).

147391487 is an equidigital number, since it uses as much as digits as its factorization.

147391487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3427752.

The product of its digits is 169344, while the sum is 44.

The square root of 147391487 is about 12140.4895700297. The cubic root of 147391487 is about 528.2313024209.

The spelling of 147391487 in words is "one hundred forty-seven million, three hundred ninety-one thousand, four hundred eighty-seven".