1399554 has 24 divisors (see below), whose sum is σ = 3266172. Its totient is φ = 430560.

The previous prime is 1399553. The next prime is 1399577. The reversal of 1399554 is 4559931.

1399554 is a `hidden beast` number, since 13 + 99 + 554 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1071225 + 328329 = 1035^2 + 573^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1399553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2757 + ... + 3224.

2^1399554 is an apocalyptic number.

1399554 is an abundant number, since it is smaller than the sum of its proper divisors (1866618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1399554 is a wasteful number, since it uses less digits than its factorization.

1399554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6002 (or 5999 counting only the distinct ones).

The product of its digits is 24300, while the sum is 36.

The square root of 1399554 is about 1183.0274722085. The cubic root of 1399554 is about 111.8570135353.

It can be divided in two parts, 1399 and 554, that added together give a triangular number (1953 = T₆₂).

The spelling of 1399554 in words is "one million, three hundred ninety-nine thousand, five hundred fifty-four".