40709139 has 16 divisors (see below), whose sum is σ = 56173728. Its totient is φ = 26203392.

The previous prime is 40709099. The next prime is 40709171. The reversal of 40709139 is 93190704.

It is not a de Polignac number, because 40709139 - 2¹² = 40705043 is a prime.

It is a plaindrome in base 14.

It is a zygodrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (40702139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13869 + ... + 16545.

It is an arithmetic number, because the mean of its divisors is an integer number (3510858).

Almost surely, 2^40709139 is an apocalyptic number.

40709139 is a deficient number, since it is larger than the sum of its proper divisors (15464589).

40709139 is a wasteful number, since it uses less digits than its factorization.

40709139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2854.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 40709139 is about 6380.3713841751. The cubic root of 40709139 is about 344.0043801272.

The spelling of 40709139 in words is "forty million, seven hundred nine thousand, one hundred thirty-nine".