405653442 has 16 divisors (see below), whose sum is σ = 812520480. Its totient is φ = 135015552.

The previous prime is 405653431. The next prime is 405653447. The reversal of 405653442 is 244356504.

It is not an unprimeable number, because it can be changed into a prime (405653447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46192 + ... + 54267.

It is an arithmetic number, because the mean of its divisors is an integer number (50782530).

Almost surely, 2^405653442 is an apocalyptic number.

405653442 is an abundant number, since it is smaller than the sum of its proper divisors (406867038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

405653442 is a wasteful number, since it uses less digits than its factorization.

405653442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101137.

The product of its (nonzero) digits is 57600, while the sum is 33.

The square root of 405653442 is about 20140.8401512946. The cubic root of 405653442 is about 740.2613162812.

The spelling of 405653442 in words is "four hundred five million, six hundred fifty-three thousand, four hundred forty-two".