355640406 has 16 divisors (see below), whose sum is σ = 775942848. Its totient is φ = 107769800.

The previous prime is 355640387. The next prime is 355640419. The reversal of 355640406 is 604046553.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

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, 2694180 + ... + 2694311.

It is an arithmetic number, because the mean of its divisors is an integer number (48496428).

Almost surely, 2^355640406 is an apocalyptic number.

355640406 is an abundant number, since it is smaller than the sum of its proper divisors (420302442).

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

355640406 is a wasteful number, since it uses less digits than its factorization.

355640406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5388507.

The product of its (nonzero) digits is 43200, while the sum is 33.

The square root of 355640406 is about 18858.4306345995. The cubic root of 355640406 is about 708.4953960469.

Adding to 355640406 its reverse (604046553), we get a palindrome (959686959).

The spelling of 355640406 in words is "three hundred fifty-five million, six hundred forty thousand, four hundred six".