354990 has 16 divisors (see below), whose sum is σ = 852048. Its totient is φ = 94656.

The previous prime is 354983. The next prime is 354997. The reversal of 354990 is 99453.

It is an interprime number because it is at equal distance from previous prime (354983) and next prime (354997).

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 11833 = 354990 / (3 + 5 + 4 + 9 + 9 + 0).

It is a Curzon number.

It is a plaindrome in base 11 and base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (354997) by changing a digit.

354990 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 7 ways as a sum of consecutive naturals, for example, 5887 + ... + 5946.

It is an arithmetic number, because the mean of its divisors is an integer number (53253).

2³⁵⁴⁹⁹⁰ is an apocalyptic number.

354990 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

354990 is an abundant number, since it is smaller than the sum of its proper divisors (497058).

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

354990 is a wasteful number, since it uses less digits than its factorization.

354990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11843.

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 354990 is about 595.8103725180. The cubic root of 354990 is about 70.8063226503.

The spelling of 354990 in words is "three hundred fifty-four thousand, nine hundred ninety".