83740407 has 4 divisors (see below), whose sum is σ = 111653880. Its totient is φ = 55826936.

The previous prime is 83740403. The next prime is 83740421. The reversal of 83740407 is 70404738.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 83740407 - 2² = 83740403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83740403) 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, 13956732 + ... + 13956737.

It is an arithmetic number, because the mean of its divisors is an integer number (27913470).

Almost surely, 2^83740407 is an apocalyptic number.

83740407 is a deficient number, since it is larger than the sum of its proper divisors (27913473).

83740407 is a wasteful number, since it uses less digits than its factorization.

83740407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27913472.

The product of its (nonzero) digits is 18816, while the sum is 33.

The square root of 83740407 is about 9150.9784722728. The cubic root of 83740407 is about 437.5003006256.

The spelling of 83740407 in words is "eighty-three million, seven hundred forty thousand, four hundred seven".