1939970 has 16 divisors (see below), whose sum is σ = 3507840. Its totient is φ = 772464.

The previous prime is 1939969. The next prime is 1939999. The reversal of 1939970 is 799391.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3959 + ... + 4421.

It is an arithmetic number, because the mean of its divisors is an integer number (219240).

2^1939970 is an apocalyptic number.

1939970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1939970 is a deficient number, since it is larger than the sum of its proper divisors (1567870).

1939970 is a wasteful number, since it uses less digits than its factorization.

1939970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889.

The product of its (nonzero) digits is 15309, while the sum is 38.

The square root of 1939970 is about 1392.8280583044. The cubic root of 1939970 is about 124.7187275612.

It can be divided in two parts, 1939 and 970, that multiplied together give a triangular number (1880830 = T₁₉₃₉).

The spelling of 1939970 in words is "one million, nine hundred thirty-nine thousand, nine hundred seventy".