40402273 has 8 divisors (see below), whose sum is σ = 41119328. Its totient is φ = 39688704.

The previous prime is 40402253. The next prime is 40402291. The reversal of 40402273 is 37220404.

40402273 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40402273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40402253) 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, 34465 + ... + 35617.

It is an arithmetic number, because the mean of its divisors is an integer number (5139916).

Almost surely, 2^40402273 is an apocalyptic number.

It is an amenable number.

40402273 is a deficient number, since it is larger than the sum of its proper divisors (717055).

40402273 is a wasteful number, since it uses less digits than its factorization.

40402273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1743.

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 40402273 is about 6356.2782349422. The cubic root of 40402273 is about 343.1378293329.

Adding to 40402273 its reverse (37220404), we get a palindrome (77622677).

The spelling of 40402273 in words is "forty million, four hundred two thousand, two hundred seventy-three".