40976309 has 4 divisors (see below), whose sum is σ = 44701440. Its totient is φ = 37251180.

The previous prime is 40976269. The next prime is 40976321. The reversal of 40976309 is 90367904.

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 a cyclic number.

It is not a de Polignac number, because 40976309 - 2¹² = 40972213 is a prime.

It is a super-3 number, since 3×40976309³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40976359) 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, 1862549 + ... + 1862570.

It is an arithmetic number, because the mean of its divisors is an integer number (11175360).

Almost surely, 2^40976309 is an apocalyptic number.

It is an amenable number.

40976309 is a deficient number, since it is larger than the sum of its proper divisors (3725131).

40976309 is a wasteful number, since it uses less digits than its factorization.

40976309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3725130.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 40976309 is about 6401.2740138194. The cubic root of 40976309 is about 344.7552952136.

The spelling of 40976309 in words is "forty million, nine hundred seventy-six thousand, three hundred nine".