405023355 has 64 divisors (see below), whose sum is σ = 793152000. Its totient is φ = 194463360.

The previous prime is 405023341. The next prime is 405023357. The reversal of 405023355 is 553320504.

It is not a de Polignac number, because 405023355 - 2⁶ = 405023291 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (405023357) 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 63 ways as a sum of consecutive naturals, for example, 157621 + ... + 160169.

It is an arithmetic number, because the mean of its divisors is an integer number (12393000).

Almost surely, 2^405023355 is an apocalyptic number.

405023355 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

405023355 is a deficient number, since it is larger than the sum of its proper divisors (388128645).

405023355 is a wasteful number, since it uses less digits than its factorization.

405023355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2681 (or 2675 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 27.

The square root of 405023355 is about 20125.1920487731. The cubic root of 405023355 is about 739.8778438487.

Adding to 405023355 its reverse (553320504), we get a palindrome (958343859).

The spelling of 405023355 in words is "four hundred five million, twenty-three thousand, three hundred fifty-five".