40652139 has 8 divisors (see below), whose sum is σ = 59130432. Its totient is φ = 24637640.

The previous prime is 40652137. The next prime is 40652149. The reversal of 40652139 is 93125604.

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

It is a cyclic number.

It is not a de Polignac number, because 40652139 - 2¹ = 40652137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40652137) 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, 615909 + ... + 615974.

It is an arithmetic number, because the mean of its divisors is an integer number (7391304).

Almost surely, 2^40652139 is an apocalyptic number.

40652139 is a deficient number, since it is larger than the sum of its proper divisors (18478293).

40652139 is a wasteful number, since it uses less digits than its factorization.

40652139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1231897.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 40652139 is about 6375.9029948706. The cubic root of 40652139 is about 343.8437494601.

The spelling of 40652139 in words is "forty million, six hundred fifty-two thousand, one hundred thirty-nine".