39942903 has 64 divisors (see below), whose sum is σ = 73285632. Its totient is φ = 18679680.

The previous prime is 39942887. The next prime is 39942907. The reversal of 39942903 is 30924993.

It is not a de Polignac number, because 39942903 - 2⁴ = 39942887 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39942907) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 141000 + ... + 141282.

It is an arithmetic number, because the mean of its divisors is an integer number (1145088).

Almost surely, 2^39942903 is an apocalyptic number.

39942903 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

39942903 is a deficient number, since it is larger than the sum of its proper divisors (33342729).

39942903 is a wasteful number, since it uses less digits than its factorization.

39942903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364.

The product of its (nonzero) digits is 52488, while the sum is 39.

The square root of 39942903 is about 6320.0397941785. The cubic root of 39942903 is about 341.8323876873.

The spelling of 39942903 in words is "thirty-nine million, nine hundred forty-two thousand, nine hundred three".