40346709749 has 4 divisors (see below), whose sum is σ = 40348704960. Its totient is φ = 40344714540.

The previous prime is 40346709721. The next prime is 40346709791. The reversal of 40346709749 is 94790764304.

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 a de Polignac number, because none of the positive numbers 2^k-40346709749 is a prime.

It is a super-3 number, since 3×40346709749³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40346709749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40346709049) 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, 966959 + ... + 1007820.

It is an arithmetic number, because the mean of its divisors is an integer number (10087176240).

Almost surely, 2^40346709749 is an apocalyptic number.

It is an amenable number.

40346709749 is a deficient number, since it is larger than the sum of its proper divisors (1995211).

40346709749 is a wasteful number, since it uses less digits than its factorization.

40346709749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1995210.

The product of its (nonzero) digits is 4572288, while the sum is 53.

The spelling of 40346709749 in words is "forty billion, three hundred forty-six million, seven hundred nine thousand, seven hundred forty-nine".