101447489 has 30 divisors (see below), whose sum is σ = 123783030. Its totient is φ = 83054400.

The previous prime is 101447471. The next prime is 101447513. The reversal of 101447489 is 984744101.

It can be written as a sum of positive squares in 3 ways, for example, as 7745089 + 93702400 = 2783^2 + 9680^2 .

It is not a de Polignac number, because 101447489 - 2¹² = 101443393 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 (101447189) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 2474309 + ... + 2474349.

It is an arithmetic number, because the mean of its divisors is an integer number (4126101).

Almost surely, 2^101447489 is an apocalyptic number.

It is an amenable number.

101447489 is a deficient number, since it is larger than the sum of its proper divisors (22335541).

101447489 is an frugal number, since it uses more digits than its factorization.

101447489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111 (or 65 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 101447489 is about 10072.1144254819. The cubic root of 101447489 is about 466.3877132755.

It can be divided in two parts, 10 and 1447489, that multiplied together give a triangular number (14474890 = T₅₃₈₀).

The spelling of 101447489 in words is "one hundred one million, four hundred forty-seven thousand, four hundred eighty-nine".