3958237 has 4 divisors (see below), whose sum is σ = 3978940. Its totient is φ = 3937536.

The previous prime is 3958219. The next prime is 3958243. The reversal of 3958237 is 7328593.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7328593 = 79 ⋅92767.

It can be written as a sum of positive squares in 2 ways, for example, as 881721 + 3076516 = 939^2 + 1754^2 .

It is a cyclic number.

It is not a de Polignac number, because 3958237 - 2⁷ = 3958109 is a prime.

It is a Duffinian number.

3958237 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3958196 and 3958205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3958217) 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, 10062 + ... + 10447.

It is an arithmetic number, because the mean of its divisors is an integer number (994735).

Almost surely, 2^3958237 is an apocalyptic number.

It is an amenable number.

3958237 is a deficient number, since it is larger than the sum of its proper divisors (20703).

3958237 is a wasteful number, since it uses less digits than its factorization.

3958237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20702.

The product of its digits is 45360, while the sum is 37.

The square root of 3958237 is about 1989.5318544824. The cubic root of 3958237 is about 158.1857160327.

The spelling of 3958237 in words is "three million, nine hundred fifty-eight thousand, two hundred thirty-seven".