147857539 has 4 divisors (see below), whose sum is σ = 148836880. Its totient is φ = 146878200.

The previous prime is 147857527. The next prime is 147857557. The reversal of 147857539 is 935758741.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 147857539 - 2²¹ = 145760387 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 147857492 and 147857501.

It is not an unprimeable number, because it can be changed into a prime (147857509) 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, 489444 + ... + 489745.

It is an arithmetic number, because the mean of its divisors is an integer number (37209220).

Almost surely, 2^147857539 is an apocalyptic number.

147857539 is a deficient number, since it is larger than the sum of its proper divisors (979341).

147857539 is an equidigital number, since it uses as much as digits as its factorization.

147857539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 979340.

The product of its digits is 1058400, while the sum is 49.

The square root of 147857539 is about 12159.6685398904. The cubic root of 147857539 is about 528.7874725625.

The spelling of 147857539 in words is "one hundred forty-seven million, eight hundred fifty-seven thousand, five hundred thirty-nine".