40370709 has 4 divisors (see below), whose sum is σ = 53827616. Its totient is φ = 26913804.

The previous prime is 40370689. The next prime is 40370717. The reversal of 40370709 is 90707304.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 40370709 - 2⁵ = 40370677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40377709) 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, 6728449 + ... + 6728454.

It is an arithmetic number, because the mean of its divisors is an integer number (13456904).

Almost surely, 2^40370709 is an apocalyptic number.

It is an amenable number.

40370709 is a deficient number, since it is larger than the sum of its proper divisors (13456907).

40370709 is a wasteful number, since it uses less digits than its factorization.

40370709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13456906.

The product of its (nonzero) digits is 5292, while the sum is 30.

The square root of 40370709 is about 6353.7948503237. The cubic root of 40370709 is about 343.0484480237.

The spelling of 40370709 in words is "forty million, three hundred seventy thousand, seven hundred nine".