40044711397 has 4 divisors (see below), whose sum is σ = 40284500256. Its totient is φ = 39804922540.

The previous prime is 40044711359. The next prime is 40044711479. The reversal of 40044711397 is 79311744004.

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 40044711397 - 2¹⁹ = 40044187109 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 (40044711347) 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, 119894179 + ... + 119894512.

It is an arithmetic number, because the mean of its divisors is an integer number (10071125064).

Almost surely, 2^40044711397 is an apocalyptic number.

It is an amenable number.

40044711397 is a deficient number, since it is larger than the sum of its proper divisors (239788859).

40044711397 is a wasteful number, since it uses less digits than its factorization.

40044711397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239788858.

The product of its (nonzero) digits is 84672, while the sum is 40.

The spelling of 40044711397 in words is "forty billion, forty-four million, seven hundred eleven thousand, three hundred ninety-seven".