400075197 has 8 divisors (see below), whose sum is σ = 540186240. Its totient is φ = 263340480.

The previous prime is 400075177. The next prime is 400075231. The reversal of 400075197 is 791570004.

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

It is not a de Polignac number, because 400075197 - 2⁷ = 400075069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400075177) 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, 843804 + ... + 844277.

It is an arithmetic number, because the mean of its divisors is an integer number (67523280).

Almost surely, 2^400075197 is an apocalyptic number.

It is an amenable number.

400075197 is a deficient number, since it is larger than the sum of its proper divisors (140111043).

400075197 is a wasteful number, since it uses less digits than its factorization.

400075197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1688163.

The product of its (nonzero) digits is 8820, while the sum is 33.

The square root of 400075197 is about 20001.8798366554. The cubic root of 400075197 is about 736.8524681879.

It can be divided in two parts, 4000 and 75197, that added together give a palindrome (79197).

The spelling of 400075197 in words is "four hundred million, seventy-five thousand, one hundred ninety-seven".