103439994 has 64 divisors (see below), whose sum is σ = 248832000. Its totient is φ = 28042560.

The previous prime is 103439989. The next prime is 103440017. The reversal of 103439994 is 499934301.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68257 + ... + 69755.

It is an arithmetic number, because the mean of its divisors is an integer number (3888000).

Almost surely, 2^103439994 is an apocalyptic number.

103439994 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 103439994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124416000).

103439994 is an abundant number, since it is smaller than the sum of its proper divisors (145392006).

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

103439994 is a wasteful number, since it uses less digits than its factorization.

103439994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1595.

The product of its (nonzero) digits is 104976, while the sum is 42.

The square root of 103439994 is about 10170.5454131035. The cubic root of 103439994 is about 469.4213400619.

The spelling of 103439994 in words is "one hundred three million, four hundred thirty-nine thousand, nine hundred ninety-four".