101392491 has 4 divisors (see below), whose sum is σ = 135189992. Its totient is φ = 67594992.

The previous prime is 101392483. The next prime is 101392589. The reversal of 101392491 is 194293101.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 101392491 - 2³ = 101392483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101392481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16898746 + ... + 16898751.

It is an arithmetic number, because the mean of its divisors is an integer number (33797498).

Almost surely, 2^101392491 is an apocalyptic number.

101392491 is a deficient number, since it is larger than the sum of its proper divisors (33797501).

101392491 is an equidigital number, since it uses as much as digits as its factorization.

101392491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33797500.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 101392491 is about 10069.3838441088. The cubic root of 101392491 is about 466.3034166986.

The spelling of 101392491 in words is "one hundred one million, three hundred ninety-two thousand, four hundred ninety-one".