354449988 has 18 divisors (see below), whose sum is σ = 895970894. Its totient is φ = 118149984.

The previous prime is 354449981. The next prime is 354450007. The reversal of 354449988 is 889944453.

354449988 is a `hidden beast` number, since 3 + 544 + 4 + 9 + 98 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 199148544 + 155301444 = 14112^2 + 12462^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (354449981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4922881 + ... + 4922952.

Almost surely, 2^354449988 is an apocalyptic number.

It is an amenable number.

354449988 is an abundant number, since it is smaller than the sum of its proper divisors (541520906).

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

354449988 is a wasteful number, since it uses less digits than its factorization.

354449988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9845843 (or 9845838 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 54.

The square root of 354449988 is about 18826.8422206168. The cubic root of 354449988 is about 707.7040082271.

The spelling of 354449988 in words is "three hundred fifty-four million, four hundred forty-nine thousand, nine hundred eighty-eight".