101139444 has 36 divisors (see below), whose sum is σ = 292181344. Its totient is φ = 28896912.

The previous prime is 101139439. The next prime is 101139449. The reversal of 101139444 is 444931101.

It is an interprime number because it is at equal distance from previous prime (101139439) and next prime (101139449).

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101139449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 200422 + ... + 200925.

Almost surely, 2^101139444 is an apocalyptic number.

101139444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

101139444 is an abundant number, since it is smaller than the sum of its proper divisors (191041900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101139444 is a wasteful number, since it uses less digits than its factorization.

101139444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401364 (or 401359 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 101139444 is about 10056.8108264996. The cubic root of 101139444 is about 465.9151730264.

The spelling of 101139444 in words is "one hundred one million, one hundred thirty-nine thousand, four hundred forty-four".