400415375 has 16 divisors (see below), whose sum is σ = 515843328. Its totient is φ = 309996000.

The previous prime is 400415357. The next prime is 400415413. The reversal of 400415375 is 573514004.

It is not a de Polignac number, because 400415375 - 2⁶ = 400415311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47792 + ... + 55541.

It is an arithmetic number, because the mean of its divisors is an integer number (32240208).

Almost surely, 2^400415375 is an apocalyptic number.

400415375 is a deficient number, since it is larger than the sum of its proper divisors (115427953).

400415375 is a wasteful number, since it uses less digits than its factorization.

400415375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103379 (or 103369 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 400415375 is about 20010.3816805177. The cubic root of 400415375 is about 737.0612539277.

Adding to 400415375 its reverse (573514004), we get a palindrome (973929379).

The spelling of 400415375 in words is "four hundred million, four hundred fifteen thousand, three hundred seventy-five".