101939947 has 8 divisors (see below), whose sum is σ = 102776832. Its totient is φ = 101106600.

The previous prime is 101939927. The next prime is 101939951. The reversal of 101939947 is 749939101.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101939947 is a prime.

It is a super-3 number, since 3×101939947³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101939917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93238 + ... + 94324.

It is an arithmetic number, because the mean of its divisors is an integer number (12847104).

Almost surely, 2^101939947 is an apocalyptic number.

101939947 is a deficient number, since it is larger than the sum of its proper divisors (836885).

101939947 is a wasteful number, since it uses less digits than its factorization.

101939947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1769.

The product of its (nonzero) digits is 61236, while the sum is 43.

The square root of 101939947 is about 10096.5314341114. The cubic root of 101939947 is about 467.1411596196.

The spelling of 101939947 in words is "one hundred one million, nine hundred thirty-nine thousand, nine hundred forty-seven".