40690001 has 16 divisors (see below), whose sum is σ = 47140800. Its totient is φ = 35022240.

The previous prime is 40689983. The next prime is 40690007. The reversal of 40690001 is 10009604.

It is not a de Polignac number, because 40690001 - 2⁶ = 40689937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40690007) 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, 24485 + ... + 26093.

It is an arithmetic number, because the mean of its divisors is an integer number (2946300).

Almost surely, 2^40690001 is an apocalyptic number.

It is an amenable number.

40690001 is a deficient number, since it is larger than the sum of its proper divisors (6450799).

40690001 is a wasteful number, since it uses less digits than its factorization.

40690001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1661 (or 1639 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 40690001 is about 6378.8714519106. The cubic root of 40690001 is about 343.9504644059.

Adding to 40690001 its reverse (10009604), we get a palindrome (50699605).

The spelling of 40690001 in words is "forty million, six hundred ninety thousand, one".