40772293 has 4 divisors (see below), whose sum is σ = 40785388. Its totient is φ = 40759200.

The previous prime is 40772287. The next prime is 40772311. The reversal of 40772293 is 39227704.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1044484 + 39727809 = 1022^2 + 6303^2 .

It is a cyclic number.

It is not a de Polignac number, because 40772293 - 2¹⁷ = 40641221 is a prime.

It is a super-3 number, since 3×40772293³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40772203) 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, 1105 + ... + 9097.

It is an arithmetic number, because the mean of its divisors is an integer number (10196347).

Almost surely, 2^40772293 is an apocalyptic number.

It is an amenable number.

40772293 is a deficient number, since it is larger than the sum of its proper divisors (13095).

40772293 is an equidigital number, since it uses as much as digits as its factorization.

40772293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13094.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 40772293 is about 6385.3185511766. The cubic root of 40772293 is about 344.1821782692.

Adding to 40772293 its reverse (39227704), we get a palindrome (79999997).

The spelling of 40772293 in words is "forty million, seven hundred seventy-two thousand, two hundred ninety-three".