400740317 has 8 divisors (see below), whose sum is σ = 414235392. Its totient is φ = 387280800.

The previous prime is 400740313. The next prime is 400740407. The reversal of 400740317 is 713047004.

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 400740317 - 2² = 400740313 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400740313) 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, 15098 + ... + 32084.

It is an arithmetic number, because the mean of its divisors is an integer number (51779424).

Almost surely, 2^400740317 is an apocalyptic number.

It is an amenable number.

400740317 is a deficient number, since it is larger than the sum of its proper divisors (13495075).

400740317 is a wasteful number, since it uses less digits than its factorization.

400740317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17779.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 400740317 is about 20018.4993693334. The cubic root of 400740317 is about 737.2605781094.

The spelling of 400740317 in words is "four hundred million, seven hundred forty thousand, three hundred seventeen".