405980067 has 6 divisors (see below), whose sum is σ = 541353292. Its totient is φ = 270630112.

The previous prime is 405980051. The next prime is 405980101. The reversal of 405980067 is 760089504.

It is not a de Polignac number, because 405980067 - 2⁴ = 405980051 is a prime.

It is a super-4 number, since 4×405980067⁴ (a number of 36 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (405980027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29083 + ... + 40715.

Almost surely, 2^405980067 is an apocalyptic number.

405980067 is a deficient number, since it is larger than the sum of its proper divisors (135373225).

405980067 is an frugal number, since it uses more digits than its factorization.

405980067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23269 (or 11636 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 405980067 is about 20148.9470444487. The cubic root of 405980067 is about 740.4599447672.

The spelling of 405980067 in words is "four hundred five million, nine hundred eighty thousand, sixty-seven".