40857392249 has 4 divisors (see below), whose sum is σ = 41232230820. Its totient is φ = 40482553680.

The previous prime is 40857392243. The next prime is 40857392267. The reversal of 40857392249 is 94229375804.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27099744400 + 13757647849 = 164620^2 + 117293^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40857392249 is a prime.

It is a super-4 number, since 4×40857392249⁴ (a number of 44 digits) contains 4444 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 40857392249.

It is not an unprimeable number, because it can be changed into a prime (40857392243) 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, 187419122 + ... + 187419339.

It is an arithmetic number, because the mean of its divisors is an integer number (10308057705).

Almost surely, 2^40857392249 is an apocalyptic number.

It is an amenable number.

40857392249 is a deficient number, since it is larger than the sum of its proper divisors (374838571).

40857392249 is a wasteful number, since it uses less digits than its factorization.

40857392249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374838570.

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 40857392249 in words is "forty billion, eight hundred fifty-seven million, three hundred ninety-two thousand, two hundred forty-nine".