1390550 has 48 divisors (see below), whose sum is σ = 3080160. Its totient is φ = 456960.

The previous prime is 1390547. The next prime is 1390573. The reversal of 1390550 is 550931.

1390550 = T₂₈ + T₂₉ + ... + T₂₀₂.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10082 + ... + 10218.

It is an arithmetic number, because the mean of its divisors is an integer number (64170).

2^1390550 is an apocalyptic number.

1390550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1390550 is an abundant number, since it is smaller than the sum of its proper divisors (1689610).

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

1390550 is a wasteful number, since it uses less digits than its factorization.

1390550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 675, while the sum is 23.

The square root of 1390550 is about 1179.2158411419. The cubic root of 1390550 is about 111.6166207265.

The spelling of 1390550 in words is "one million, three hundred ninety thousand, five hundred fifty".