72149109 has 8 divisors (see below), whose sum is σ = 96257952. Its totient is φ = 48069840.

The previous prime is 72149107. The next prime is 72149111. The reversal of 72149109 is 90194127.

It is an interprime number because it is at equal distance from previous prime (72149107) and next prime (72149111).

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

It is not a de Polignac number, because 72149109 - 2¹ = 72149107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72149109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72149107) 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 7 ways as a sum of consecutive naturals, for example, 879 + ... + 12044.

It is an arithmetic number, because the mean of its divisors is an integer number (12032244).

Almost surely, 2^72149109 is an apocalyptic number.

It is an amenable number.

72149109 is a deficient number, since it is larger than the sum of its proper divisors (24108843).

72149109 is a wasteful number, since it uses less digits than its factorization.

72149109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14787.

The product of its (nonzero) digits is 4536, while the sum is 33.

The square root of 72149109 is about 8494.0631619973. The cubic root of 72149109 is about 416.3037510510.

The spelling of 72149109 in words is "seventy-two million, one hundred forty-nine thousand, one hundred nine".