400377 has 8 divisors (see below), whose sum is σ = 548416. Its totient is φ = 259632.

The previous prime is 400339. The next prime is 400381. The reversal of 400377 is 773004.

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

It is not a de Polignac number, because 400377 - 2⁶ = 400313 is a prime.

It is a Duffinian number.

400377 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (400307) 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, 1693 + ... + 1914.

It is an arithmetic number, because the mean of its divisors is an integer number (68552).

2⁴⁰⁰³⁷⁷ is an apocalyptic number.

It is an amenable number.

400377 is a deficient number, since it is larger than the sum of its proper divisors (148039).

400377 is a wasteful number, since it uses less digits than its factorization.

400377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3647.

The product of its (nonzero) digits is 588, while the sum is 21.

The square root of 400377 is about 632.7535065094. The cubic root of 400377 is about 73.7037707022.

It can be divided in two parts, 400 and 377, that added together give a palindrome (777).

The spelling of 400377 in words is "four hundred thousand, three hundred seventy-seven", and thus it is an iban number.