40403402 has 32 divisors (see below), whose sum is σ = 67858560. Its totient is φ = 17922240.

The previous prime is 40403401. The next prime is 40403417. The reversal of 40403402 is 20430404.

It is not an unprimeable number, because it can be changed into a prime (40403401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79124 + ... + 79632.

It is an arithmetic number, because the mean of its divisors is an integer number (2120580).

Almost surely, 2^40403402 is an apocalyptic number.

40403402 is a deficient number, since it is larger than the sum of its proper divisors (27455158).

40403402 is a wasteful number, since it uses less digits than its factorization.

40403402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 40403402 is about 6356.3670441534. The cubic root of 40403402 is about 343.1410255144.

Adding to 40403402 its reverse (20430404), we get a palindrome (60833806).

The spelling of 40403402 in words is "forty million, four hundred three thousand, four hundred two".