1023939 has 12 divisors (see below), whose sum is σ = 1690416. Its totient is φ = 585072.

The previous prime is 1023871. The next prime is 1023941. The reversal of 1023939 is 9393201.

It is not a de Polignac number, because 1023939 - 2¹³ = 1015747 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (1023949) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8064 + ... + 8189.

It is an arithmetic number, because the mean of its divisors is an integer number (140868).

2^1023939 is an apocalyptic number.

1023939 is a deficient number, since it is larger than the sum of its proper divisors (666477).

1023939 is a wasteful number, since it uses less digits than its factorization.

1023939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16266 (or 16263 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 1023939 is about 1011.8987103461. The cubic root of 1023939 is about 100.7916825148.

The spelling of 1023939 in words is "one million, twenty-three thousand, nine hundred thirty-nine".