1398154 has 4 divisors (see below), whose sum is σ = 2097234. Its totient is φ = 699076.

The previous prime is 1398151. The next prime is 1398161. The reversal of 1398154 is 4518931.

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., 1010025 + 388129 = 1005^2 + 623^2 .

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (1398151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349537 + ... + 349540.

2^1398154 is an apocalyptic number.

1398154 is a deficient number, since it is larger than the sum of its proper divisors (699080).

1398154 is an equidigital number, since it uses as much as digits as its factorization.

1398154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699079.

The product of its digits is 4320, while the sum is 31.

The square root of 1398154 is about 1182.4356219262. The cubic root of 1398154 is about 111.8197035388.

The spelling of 1398154 in words is "one million, three hundred ninety-eight thousand, one hundred fifty-four".