40615901 has 4 divisors (see below), whose sum is σ = 42753600. Its totient is φ = 38478204.

The previous prime is 40615891. The next prime is 40615933. The reversal of 40615901 is 10951604.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40615901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40615501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1068821 + ... + 1068858.

It is an arithmetic number, because the mean of its divisors is an integer number (10688400).

Almost surely, 2^40615901 is an apocalyptic number.

It is an amenable number.

40615901 is a deficient number, since it is larger than the sum of its proper divisors (2137699).

40615901 is a wasteful number, since it uses less digits than its factorization.

40615901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2137698.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 40615901 is about 6373.0605677335. The cubic root of 40615901 is about 343.7415497206.

The spelling of 40615901 in words is "forty million, six hundred fifteen thousand, nine hundred one".