40045254349 has 8 divisors (see below), whose sum is σ = 42501579768. Its totient is φ = 37600120320.

The previous prime is 40045254329. The next prime is 40045254413. The reversal of 40045254349 is 94345254004.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8722626025 + 31322628324 = 93395^2 + 176982^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 40045254349 - 2²³ = 40036865741 is a prime.

It is a super-2 number, since 2×40045254349² (a number of 22 digits) contains 22 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 (40045254329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2790472 + ... + 2804785.

It is an arithmetic number, because the mean of its divisors is an integer number (5312697471).

Almost surely, 2^40045254349 is an apocalyptic number.

It is an amenable number.

40045254349 is a deficient number, since it is larger than the sum of its proper divisors (2456325419).

40045254349 is a wasteful number, since it uses less digits than its factorization.

40045254349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5595695.

The product of its (nonzero) digits is 345600, while the sum is 40.

The spelling of 40045254349 in words is "forty billion, forty-five million, two hundred fifty-four thousand, three hundred forty-nine".