101239447 has 4 divisors (see below), whose sum is σ = 102036736. Its totient is φ = 100442160.

The previous prime is 101239433. The next prime is 101239469. The reversal of 101239447 is 744932101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 744932101 = 373 ⋅1997137.

It is a cyclic number.

It is not a de Polignac number, because 101239447 - 2¹¹ = 101237399 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 (101239417) 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, 398454 + ... + 398707.

It is an arithmetic number, because the mean of its divisors is an integer number (25509184).

Almost surely, 2^101239447 is an apocalyptic number.

101239447 is a deficient number, since it is larger than the sum of its proper divisors (797289).

101239447 is an equidigital number, since it uses as much as digits as its factorization.

101239447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797288.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 101239447 is about 10061.7815022987. The cubic root of 101239447 is about 466.0686824294.

The spelling of 101239447 in words is "one hundred one million, two hundred thirty-nine thousand, four hundred forty-seven".