400394107 has 8 divisors (see below), whose sum is σ = 405000000. Its totient is φ = 395804424.

The previous prime is 400394101. The next prime is 400394153. The reversal of 400394107 is 701493004.

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 400394107 - 2¹⁹ = 399869819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400394101) 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, 49644 + ... + 57142.

It is an arithmetic number, because the mean of its divisors is an integer number (50625000).

Almost surely, 2^400394107 is an apocalyptic number.

400394107 is a deficient number, since it is larger than the sum of its proper divisors (4605893).

400394107 is a wasteful number, since it uses less digits than its factorization.

400394107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8105.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 400394107 is about 20009.8502493147. The cubic root of 400394107 is about 737.0482040656.

The spelling of 400394107 in words is "four hundred million, three hundred ninety-four thousand, one hundred seven".