7954138 has 4 divisors (see below), whose sum is σ = 11931210. Its totient is φ = 3977068.

The previous prime is 7954127. The next prime is 7954151. The reversal of 7954138 is 8314597.

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

It can be written as a sum of positive squares in only one way, i.e., 4652649 + 3301489 = 2157^2 + 1817^2 .

It is a super-2 number, since 2×7954138² = 126536622646088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7954097 and 7954106.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1988533 + ... + 1988536.

Almost surely, 2^7954138 is an apocalyptic number.

7954138 is a deficient number, since it is larger than the sum of its proper divisors (3977072).

7954138 is a wasteful number, since it uses less digits than its factorization.

7954138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3977071.

The product of its digits is 30240, while the sum is 37.

The square root of 7954138 is about 2820.3081391933. The cubic root of 7954138 is about 199.6170840113.

The spelling of 7954138 in words is "seven million, nine hundred fifty-four thousand, one hundred thirty-eight".