40309401 has 16 divisors (see below), whose sum is σ = 58944960. Its totient is φ = 24299520.

The previous prime is 40309351. The next prime is 40309421. The reversal of 40309401 is 10490304.

It is not a de Polignac number, because 40309401 - 2⁶ = 40309337 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40309421) 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, 3205 + ... + 9533.

It is an arithmetic number, because the mean of its divisors is an integer number (3684060).

Almost surely, 2^40309401 is an apocalyptic number.

It is an amenable number.

40309401 is a deficient number, since it is larger than the sum of its proper divisors (18635559).

40309401 is a wasteful number, since it uses less digits than its factorization.

40309401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6536.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 40309401 is about 6348.9684988981. The cubic root of 40309401 is about 342.8747059703.

Adding to 40309401 its reverse (10490304), we get a palindrome (50799705).

It can be divided in two parts, 4030 and 9401, that added together give a palindrome (13431).

The spelling of 40309401 in words is "forty million, three hundred nine thousand, four hundred one".