72349471 has 2 divisors, whose sum is σ = 72349472. Its totient is φ = 72349470.

The previous prime is 72349469. The next prime is 72349499. The reversal of 72349471 is 17494327.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72349471 - 2¹ = 72349469 is a prime.

It is a super-3 number, since 3×72349471³ (a number of 25 digits) contains 333 as substring.

Together with 72349469, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 72349471.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72349411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36174735 + 36174736.

It is an arithmetic number, because the mean of its divisors is an integer number (36174736).

Almost surely, 2^72349471 is an apocalyptic number.

72349471 is a deficient number, since it is larger than the sum of its proper divisors (1).

72349471 is an equidigital number, since it uses as much as digits as its factorization.

72349471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 37.

The square root of 72349471 is about 8505.8492227408. The cubic root of 72349471 is about 416.6887609262.

The spelling of 72349471 in words is "seventy-two million, three hundred forty-nine thousand, four hundred seventy-one".