40071073 has 6 divisors (see below), whose sum is σ = 46613346. Its totient is φ = 34346592.

The previous prime is 40071071. The next prime is 40071079. The reversal of 40071073 is 37017004.

It can be written as a sum of positive squares in only one way, i.e., 38031889 + 2039184 = 6167^2 + 1428^2 .

It is not a de Polignac number, because 40071073 - 2¹ = 40071071 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40071071) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 408840 + ... + 408937.

It is an arithmetic number, because the mean of its divisors is an integer number (7768891).

Almost surely, 2^40071073 is an apocalyptic number.

It is an amenable number.

40071073 is a deficient number, since it is larger than the sum of its proper divisors (6542273).

40071073 is an equidigital number, since it uses as much as digits as its factorization.

40071073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817791 (or 817784 counting only the distinct ones).

The product of its (nonzero) digits is 588, while the sum is 22.

The square root of 40071073 is about 6330.1716406429. The cubic root of 40071073 is about 342.1976246860.

Adding to 40071073 its reverse (37017004), we get a palindrome (77088077).

The spelling of 40071073 in words is "forty million, seventy-one thousand, seventy-three".