1375990 has 32 divisors (see below), whose sum is σ = 3089664. Its totient is φ = 428640.

The previous prime is 1375987. The next prime is 1376003. The reversal of 1375990 is 995731.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124 + ... + 1663.

It is an arithmetic number, because the mean of its divisors is an integer number (96552).

2^1375990 is an apocalyptic number.

1375990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1375990 is an abundant number, since it is smaller than the sum of its proper divisors (1713674).

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

1375990 is a wasteful number, since it uses less digits than its factorization.

1375990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1812.

The product of its (nonzero) digits is 8505, while the sum is 34.

The square root of 1375990 is about 1173.0260014168. The cubic root of 1375990 is about 111.2256858871.

The spelling of 1375990 in words is "one million, three hundred seventy-five thousand, nine hundred ninety".