147447381 has 16 divisors (see below), whose sum is σ = 199378944. Its totient is φ = 96917184.

The previous prime is 147447373. The next prime is 147447389. The reversal of 147447381 is 183744741.

It is an interprime number because it is at equal distance from previous prime (147447373) and next prime (147447389).

It is not a de Polignac number, because 147447381 - 2³ = 147447373 is a prime.

It is a super-2 number, since 2×147447381² = 43481460327518322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147447389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64795 + ... + 67031.

It is an arithmetic number, because the mean of its divisors is an integer number (12461184).

Almost surely, 2^147447381 is an apocalyptic number.

It is an amenable number.

147447381 is a deficient number, since it is larger than the sum of its proper divisors (51931563).

147447381 is a wasteful number, since it uses less digits than its factorization.

147447381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2540.

The product of its digits is 75264, while the sum is 39.

The square root of 147447381 is about 12142.7913183090. The cubic root of 147447381 is about 528.2980661797.

The spelling of 147447381 in words is "one hundred forty-seven million, four hundred forty-seven thousand, three hundred eighty-one".