401187345 has 16 divisors (see below), whose sum is σ = 691276992. Its totient is φ = 197507520.

The previous prime is 401187331. The next prime is 401187361. The reversal of 401187345 is 543781104.

It is not a de Polignac number, because 401187345 - 2⁴ = 401187329 is a prime.

It is a Curzon 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, 1028491 + ... + 1028880.

It is an arithmetic number, because the mean of its divisors is an integer number (43204812).

Almost surely, 2^401187345 is an apocalyptic number.

It is an amenable number.

401187345 is a deficient number, since it is larger than the sum of its proper divisors (290089647).

401187345 is a wasteful number, since it uses less digits than its factorization.

401187345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2057392.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 401187345 is about 20029.6616296931. The cubic root of 401187345 is about 737.5346156308.

The spelling of 401187345 in words is "four hundred one million, one hundred eighty-seven thousand, three hundred forty-five".