905098 has 4 divisors (see below), whose sum is σ = 1357650. Its totient is φ = 452548.

The previous prime is 905087. The next prime is 905111. The reversal of 905098 is 890509.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 890509 = 47 ⋅18947.

It can be written as a sum of positive squares in only one way, i.e., 804609 + 100489 = 897^2 + 317^2 .

It is a super-3 number, since 3×905098³ = 2224375333277403576, which contains 333 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

905098 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 226273 + ... + 226276.

2⁹⁰⁵⁰⁹⁸ is an apocalyptic number.

905098 is a deficient number, since it is larger than the sum of its proper divisors (452552).

905098 is a wasteful number, since it uses less digits than its factorization.

905098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452551.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 905098 is about 951.3663857842. The cubic root of 905098 is about 96.7308940321.

The spelling of 905098 in words is "nine hundred five thousand, ninety-eight".