4139902 has 8 divisors (see below), whose sum is σ = 6687576. Its totient is φ = 1910712.

The previous prime is 4139899. The next prime is 4139909. The reversal of 4139902 is 2099314.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4139909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79588 + ... + 79639.

It is an arithmetic number, because the mean of its divisors is an integer number (835947).

Almost surely, 2^4139902 is an apocalyptic number.

4139902 is a deficient number, since it is larger than the sum of its proper divisors (2547674).

4139902 is a wasteful number, since it uses less digits than its factorization.

4139902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159242.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 4139902 is about 2034.6749126089. The cubic root of 4139902 is about 160.5696103687.

It can be divided in two parts, 4139 and 902, that added together give a square (5041 = 71²).

The spelling of 4139902 in words is "four million, one hundred thirty-nine thousand, nine hundred two".