40770509 has 8 divisors (see below), whose sum is σ = 44627352. Its totient is φ = 37016640.

The previous prime is 40770503. The next prime is 40770511. The reversal of 40770509 is 90507704.

It can be written as a sum of positive squares in 4 ways, for example, as 1357225 + 39413284 = 1165^2 + 6278^2 .

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 40770509 - 2⁸ = 40770253 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 (40770503) 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, 24914 + ... + 26499.

It is an arithmetic number, because the mean of its divisors is an integer number (5578419).

Almost surely, 2^40770509 is an apocalyptic number.

It is an amenable number.

40770509 is a deficient number, since it is larger than the sum of its proper divisors (3856843).

40770509 is a wasteful number, since it uses less digits than its factorization.

40770509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51487.

The product of its (nonzero) digits is 8820, while the sum is 32.

The square root of 40770509 is about 6385.1788541904. The cubic root of 40770509 is about 344.1771582755.

The spelling of 40770509 in words is "forty million, seven hundred seventy thousand, five hundred nine".