40292539393 has 2 divisors, whose sum is σ = 40292539394. Its totient is φ = 40292539392.

The previous prime is 40292539379. The next prime is 40292539433. The reversal of 40292539393 is 39393529204.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23480045824 + 16812493569 = 153232^2 + 129663^2 .

It is a cyclic number.

It is not a de Polignac number, because 40292539393 - 2²⁹ = 39755668481 is a prime.

It is not a weakly prime, because it can be changed into another prime (40292530393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20146269696 + 20146269697.

It is an arithmetic number, because the mean of its divisors is an integer number (20146269697).

Almost surely, 2^40292539393 is an apocalyptic number.

It is an amenable number.

40292539393 is a deficient number, since it is larger than the sum of its proper divisors (1).

40292539393 is an equidigital number, since it uses as much as digits as its factorization.

40292539393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1574640, while the sum is 49.

The spelling of 40292539393 in words is "forty billion, two hundred ninety-two million, five hundred thirty-nine thousand, three hundred ninety-three".