400409607 has 8 divisors (see below), whose sum is σ = 574947184. Its totient is φ = 246405888.

The previous prime is 400409579. The next prime is 400409617. The reversal of 400409607 is 706904004.

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

It is not a de Polignac number, because 400409607 - 2⁶ = 400409543 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 (400409617) 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, 5133418 + ... + 5133495.

It is an arithmetic number, because the mean of its divisors is an integer number (71868398).

Almost surely, 2^400409607 is an apocalyptic number.

400409607 is a deficient number, since it is larger than the sum of its proper divisors (174537577).

400409607 is a wasteful number, since it uses less digits than its factorization.

400409607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10266929.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 400409607 is about 20010.2375548118. The cubic root of 400409607 is about 737.0577147781.

The spelling of 400409607 in words is "four hundred million, four hundred nine thousand, six hundred seven".