40619913 has 4 divisors (see below), whose sum is σ = 54159888. Its totient is φ = 27079940.

The previous prime is 40619899. The next prime is 40619921. The reversal of 40619913 is 31991604.

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 not a de Polignac number, because 40619913 - 2¹⁴ = 40603529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40619963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6769983 + ... + 6769988.

It is an arithmetic number, because the mean of its divisors is an integer number (13539972).

Almost surely, 2^40619913 is an apocalyptic number.

It is an amenable number.

40619913 is a deficient number, since it is larger than the sum of its proper divisors (13539975).

40619913 is a wasteful number, since it uses less digits than its factorization.

40619913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13539974.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 40619913 is about 6373.3753223861. The cubic root of 40619913 is about 343.7528675023.

The spelling of 40619913 in words is "forty million, six hundred nineteen thousand, nine hundred thirteen".