1398949 has 8 divisors (see below), whose sum is σ = 1441440. Its totient is φ = 1357200.

The previous prime is 1398911. The next prime is 1398967. The reversal of 1398949 is 9498931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1398949 - 2¹³ = 1390757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1398979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7639 + ... + 7819.

It is an arithmetic number, because the mean of its divisors is an integer number (180180).

2^1398949 is an apocalyptic number.

It is an amenable number.

1398949 is a deficient number, since it is larger than the sum of its proper divisors (42491).

1398949 is a wasteful number, since it uses less digits than its factorization.

1398949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371.

The product of its digits is 69984, while the sum is 43.

The square root of 1398949 is about 1182.7717446743. The cubic root of 1398949 is about 111.8408933411.

The spelling of 1398949 in words is "one million, three hundred ninety-eight thousand, nine hundred forty-nine".