400317040549 has 8 divisors (see below), whose sum is σ = 416083741920. Its totient is φ = 384681183600.

The previous prime is 400317040493. The next prime is 400317040561. The reversal of 400317040549 is 945040713004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 400317040549 - 2¹⁹ = 400316516261 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 (400317047549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32704867 + ... + 32717104.

It is an arithmetic number, because the mean of its divisors is an integer number (52010467740).

Almost surely, 2^400317040549 is an apocalyptic number.

It is an amenable number.

400317040549 is a deficient number, since it is larger than the sum of its proper divisors (15766701371).

400317040549 is a wasteful number, since it uses less digits than its factorization.

400317040549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65422211.

The product of its (nonzero) digits is 60480, while the sum is 37.

The spelling of 400317040549 in words is "four hundred billion, three hundred seventeen million, forty thousand, five hundred forty-nine".