40401433279 has 2 divisors, whose sum is σ = 40401433280. Its totient is φ = 40401433278.

The previous prime is 40401433277. The next prime is 40401433297. The reversal of 40401433279 is 97233410404.

Together with next prime (40401433297) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40401433279 - 2¹ = 40401433277 is a prime.

Together with 40401433277, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40401433277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20200716639 + 20200716640.

It is an arithmetic number, because the mean of its divisors is an integer number (20200716640).

Almost surely, 2^40401433279 is an apocalyptic number.

40401433279 is a deficient number, since it is larger than the sum of its proper divisors (1).

40401433279 is an equidigital number, since it uses as much as digits as its factorization.

40401433279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 37.

The spelling of 40401433279 in words is "forty billion, four hundred one million, four hundred thirty-three thousand, two hundred seventy-nine".