40626454439 has 2 divisors, whose sum is σ = 40626454440. Its totient is φ = 40626454438.

The previous prime is 40626454391. The next prime is 40626454441. The reversal of 40626454439 is 93445462604.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40626454439 - 2¹² = 40626450343 is a prime.

Together with 40626454441, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 40626454393 and 40626454402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40626454139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20313227219 + 20313227220.

It is an arithmetic number, because the mean of its divisors is an integer number (20313227220).

Almost surely, 2^40626454439 is an apocalyptic number.

40626454439 is a deficient number, since it is larger than the sum of its proper divisors (1).

40626454439 is an equidigital number, since it uses as much as digits as its factorization.

40626454439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2488320, while the sum is 47.

The spelling of 40626454439 in words is "forty billion, six hundred twenty-six million, four hundred fifty-four thousand, four hundred thirty-nine".