39740138 has 8 divisors (see below), whose sum is σ = 60045732. Its totient is φ = 19724896.

The previous prime is 39740137. The next prime is 39740143. The reversal of 39740138 is 83104793.

It can be written as a sum of positive squares in 2 ways, for example, as 38031889 + 1708249 = 6167^2 + 1307^2 .

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 39740098 and 39740107.

It is not an unprimeable number, because it can be changed into a prime (39740137) 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, 72245 + ... + 72792.

Almost surely, 2^39740138 is an apocalyptic number.

39740138 is a deficient number, since it is larger than the sum of its proper divisors (20305594).

39740138 is a wasteful number, since it uses less digits than its factorization.

39740138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145176.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 39740138 is about 6303.9779504691. The cubic root of 39740138 is about 341.2529834658.

The spelling of 39740138 in words is "thirty-nine million, seven hundred forty thousand, one hundred thirty-eight".