40404375 has 60 divisors (see below), whose sum is σ = 79680744. Its totient is φ = 19560000.

The previous prime is 40404367. The next prime is 40404383. The reversal of 40404375 is 57340404.

It is an interprime number because it is at equal distance from previous prime (40404367) and next prime (40404383).

It is not a de Polignac number, because 40404375 - 2³ = 40404367 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 61549 + ... + 62201.

Almost surely, 2^40404375 is an apocalyptic number.

40404375 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

40404375 is a deficient number, since it is larger than the sum of its proper divisors (39276369).

40404375 is a wasteful number, since it uses less digits than its factorization.

40404375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690 (or 672 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 40404375 is about 6356.4435811230. The cubic root of 40404375 is about 343.1437800146.

Adding to 40404375 its reverse (57340404), we get a palindrome (97744779).

The spelling of 40404375 in words is "forty million, four hundred four thousand, three hundred seventy-five".