1394890 has 16 divisors (see below), whose sum is σ = 2869632. Its totient is φ = 478224.

The previous prime is 1394857. The next prime is 1394891. The reversal of 1394890 is 984931.

It is a super-2 number, since 2×1394890² = 3891436224200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1394891) 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, 9894 + ... + 10033.

It is an arithmetic number, because the mean of its divisors is an integer number (179352).

2^1394890 is an apocalyptic number.

1394890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1394890 is an abundant number, since it is smaller than the sum of its proper divisors (1474742).

1394890 is a wasteful number, since it uses less digits than its factorization.

1394890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19941.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 1394890 is about 1181.0546134705. The cubic root of 1394890 is about 111.7326211199.

It can be divided in two parts, 13948 and 90, that multiplied together give a triangular number (1255320 = T₁₅₈₄).

The spelling of 1394890 in words is "one million, three hundred ninety-four thousand, eight hundred ninety".