406091145 has 8 divisors (see below), whose sum is σ = 649745856. Its totient is φ = 216581936.

The previous prime is 406091137. The next prime is 406091149. The reversal of 406091145 is 541190604.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 406091145 - 2³ = 406091137 is a prime.

It is a super-2 number, since 2×406091145² = 329820036094822050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (406091149) 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 7 ways as a sum of consecutive naturals, for example, 13536357 + ... + 13536386.

It is an arithmetic number, because the mean of its divisors is an integer number (81218232).

Almost surely, 2^406091145 is an apocalyptic number.

It is an amenable number.

406091145 is a deficient number, since it is larger than the sum of its proper divisors (243654711).

406091145 is a wasteful number, since it uses less digits than its factorization.

406091145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27072751.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 406091145 is about 20151.7032778870. The cubic root of 406091145 is about 740.5274696831.

The spelling of 406091145 in words is "four hundred six million, ninety-one thousand, one hundred forty-five".