400087101 has 4 divisors (see below), whose sum is σ = 533449472. Its totient is φ = 266724732.

The previous prime is 400087099. The next prime is 400087109. The reversal of 400087101 is 101780004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 400087101 - 2¹ = 400087099 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 (400087109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66681181 + ... + 66681186.

It is an arithmetic number, because the mean of its divisors is an integer number (133362368).

Almost surely, 2^400087101 is an apocalyptic number.

It is an amenable number.

400087101 is a deficient number, since it is larger than the sum of its proper divisors (133362371).

400087101 is a wasteful number, since it uses less digits than its factorization.

400087101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133362370.

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 400087101 is about 20002.1774064725. The cubic root of 400087101 is about 736.8597763180.

The spelling of 400087101 in words is "four hundred million, eighty-seven thousand, one hundred one".