901939 has 4 divisors (see below), whose sum is σ = 904456. Its totient is φ = 899424.

The previous prime is 901937. The next prime is 901963. The reversal of 901939 is 939109.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 901939 - 2¹ = 901937 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 901939.

It is not an unprimeable number, because it can be changed into a prime (901931) 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 3 ways as a sum of consecutive naturals, for example, 609 + ... + 1474.

It is an arithmetic number, because the mean of its divisors is an integer number (226114).

2⁹⁰¹⁹³⁹ is an apocalyptic number.

901939 is a deficient number, since it is larger than the sum of its proper divisors (2517).

901939 is a wasteful number, since it uses less digits than its factorization.

901939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2516.

The product of its (nonzero) digits is 2187, while the sum is 31.

The square root of 901939 is about 949.7046909435. The cubic root of 901939 is about 96.6182251676.

The spelling of 901939 in words is "nine hundred one thousand, nine hundred thirty-nine".