100572439 has 4 divisors (see below), whose sum is σ = 109715400. Its totient is φ = 91429480.

The previous prime is 100572379. The next prime is 100572481. The reversal of 100572439 is 934275001.

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

It is a cyclic number.

It is not a de Polignac number, because 100572439 - 2⁹ = 100571927 is a prime.

It is a super-2 number, since 2×100572439² = 20229630972817442, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100572439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100572539) 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, 4571464 + ... + 4571485.

It is an arithmetic number, because the mean of its divisors is an integer number (27428850).

Almost surely, 2^100572439 is an apocalyptic number.

100572439 is a deficient number, since it is larger than the sum of its proper divisors (9142961).

100572439 is an equidigital number, since it uses as much as digits as its factorization.

100572439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9142960.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 100572439 is about 10028.5811060189. The cubic root of 100572439 is about 465.0428742215.

The spelling of 100572439 in words is "one hundred million, five hundred seventy-two thousand, four hundred thirty-nine".