3951138 has 16 divisors (see below), whose sum is σ = 7922016. Its totient is φ = 1313760.

The previous prime is 3951133. The next prime is 3951139. The reversal of 3951138 is 8311593.

It is a happy number.

It is a super-2 number, since 2×3951138² = 31222982990088, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3951131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3670 + ... + 4622.

It is an arithmetic number, because the mean of its divisors is an integer number (495126).

Almost surely, 2^3951138 is an apocalyptic number.

3951138 is an abundant number, since it is smaller than the sum of its proper divisors (3970878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3951138 is a wasteful number, since it uses less digits than its factorization.

3951138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1649.

The product of its digits is 3240, while the sum is 30.

The square root of 3951138 is about 1987.7469657882. The cubic root of 3951138 is about 158.0910920540.

The spelling of 3951138 in words is "three million, nine hundred fifty-one thousand, one hundred thirty-eight".