1098423 has 18 divisors (see below), whose sum is σ = 1652352. Its totient is φ = 703080.

The previous prime is 1098401. The next prime is 1098439. The reversal of 1098423 is 3248901.

It is not a de Polignac number, because 1098423 - 2¹⁶ = 1032887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1098443) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 8586 + ... + 8712.

2^1098423 is an apocalyptic number.

1098423 is a deficient number, since it is larger than the sum of its proper divisors (553929).

1098423 is a wasteful number, since it uses less digits than its factorization.

1098423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 1098423 is about 1048.0567732714. The cubic root of 1098423 is about 103.1786574758.

It can be divided in two parts, 1098 and 423, that added together give a square (1521 = 39²).

The spelling of 1098423 in words is "one million, ninety-eight thousand, four hundred twenty-three".