390098 has 4 divisors (see below), whose sum is σ = 585150. Its totient is φ = 195048.

The previous prime is 390097. The next prime is 390101. The reversal of 390098 is 890093.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 380689 + 9409 = 617^2 + 97^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 390098.

It is not an unprimeable number, because it can be changed into a prime (390097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97523 + ... + 97526.

2³⁹⁰⁰⁹⁸ is an apocalyptic number.

390098 is a deficient number, since it is larger than the sum of its proper divisors (195052).

390098 is a wasteful number, since it uses less digits than its factorization.

390098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195051.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 390098 is about 624.5782577068. The cubic root of 390098 is about 73.0675549039.

The spelling of 390098 in words is "three hundred ninety thousand, ninety-eight".