1398970 has 32 divisors (see below), whose sum is σ = 2736000. Its totient is φ = 513216.

The previous prime is 1398967. The next prime is 1398973. The reversal of 1398970 is 798931.

1398970 = T₁₀₀ + T₁₀₁ + ... + T₂₁₀.

It is an interprime number because it is at equal distance from previous prime (1398967) and next prime (1398973).

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (1398973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6931 + ... + 7129.

It is an arithmetic number, because the mean of its divisors is an integer number (85500).

2^1398970 is an apocalyptic number.

1398970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1398970 is a deficient number, since it is larger than the sum of its proper divisors (1337030).

1398970 is a wasteful number, since it uses less digits than its factorization.

1398970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 1398970 is about 1182.7806220935. The cubic root of 1398970 is about 111.8414529629.

The spelling of 1398970 in words is "one million, three hundred ninety-eight thousand, nine hundred seventy".