4023902 has 4 divisors (see below), whose sum is σ = 6035856. Its totient is φ = 2011950.

The previous prime is 4023889. The next prime is 4023907. The reversal of 4023902 is 2093204.

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

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4023907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005974 + ... + 1005977.

It is an arithmetic number, because the mean of its divisors is an integer number (1508964).

Almost surely, 2^4023902 is an apocalyptic number.

4023902 is a deficient number, since it is larger than the sum of its proper divisors (2011954).

4023902 is a wasteful number, since it uses less digits than its factorization.

4023902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2011953.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 4023902 is about 2005.9665999213. The cubic root of 4023902 is about 159.0556613266.

The spelling of 4023902 in words is "four million, twenty-three thousand, nine hundred two".