1405940539 has 2 divisors, whose sum is σ = 1405940540. Its totient is φ = 1405940538.

The previous prime is 1405940531. The next prime is 1405940609. The reversal of 1405940539 is 9350495041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1405940539 - 2³ = 1405940531 is a prime.

It is a super-2 number, since 2×1405940539² = 3953337598407221042, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1405940531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 702970269 + 702970270.

It is an arithmetic number, because the mean of its divisors is an integer number (702970270).

Almost surely, 2^1405940539 is an apocalyptic number.

1405940539 is a deficient number, since it is larger than the sum of its proper divisors (1).

1405940539 is an equidigital number, since it uses as much as digits as its factorization.

1405940539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 97200, while the sum is 40.

The square root of 1405940539 is about 37495.8736263072. The cubic root of 1405940539 is about 1120.2689986846.

The spelling of 1405940539 in words is "one billion, four hundred five million, nine hundred forty thousand, five hundred thirty-nine".