406015069 has 2 divisors, whose sum is σ = 406015070. Its totient is φ = 406015068.

The previous prime is 406015019. The next prime is 406015111. The reversal of 406015069 is 960510604.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 388484100 + 17530969 = 19710^2 + 4187^2 .

It is a cyclic number.

It is not a de Polignac number, because 406015069 - 2¹⁷ = 405883997 is a prime.

It is a super-2 number, since 2×406015069² = 329696472510149522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 406015069.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (406015019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203007534 + 203007535.

It is an arithmetic number, because the mean of its divisors is an integer number (203007535).

Almost surely, 2^406015069 is an apocalyptic number.

It is an amenable number.

406015069 is a deficient number, since it is larger than the sum of its proper divisors (1).

406015069 is an equidigital number, since it uses as much as digits as its factorization.

406015069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 406015069 is about 20149.8156070968. The cubic root of 406015069 is about 740.4812240009.

The spelling of 406015069 in words is "four hundred six million, fifteen thousand, sixty-nine".