400650155 has 8 divisors (see below), whose sum is σ = 492506784. Its totient is φ = 312702400.

The previous prime is 400650149. The next prime is 400650191. The reversal of 400650155 is 551056004.

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

It is not a de Polignac number, because 400650155 - 2⁴ = 400650139 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 976991 + ... + 977400.

It is an arithmetic number, because the mean of its divisors is an integer number (61563348).

Almost surely, 2^400650155 is an apocalyptic number.

400650155 is a deficient number, since it is larger than the sum of its proper divisors (91856629).

400650155 is a wasteful number, since it uses less digits than its factorization.

400650155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1954437.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 400650155 is about 20016.2472756508. The cubic root of 400650155 is about 737.2052822222.

The spelling of 400650155 in words is "four hundred million, six hundred fifty thousand, one hundred fifty-five".