40370073 has 4 divisors (see below), whose sum is σ = 53826768. Its totient is φ = 26913380.

The previous prime is 40370051. The next prime is 40370089. The reversal of 40370073 is 37007304.

40370073 is nontrivially palindromic in base 2.

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 40370073 - 2²¹ = 38272921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40370023) 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, 6728343 + ... + 6728348.

It is an arithmetic number, because the mean of its divisors is an integer number (13456692).

Almost surely, 2^40370073 is an apocalyptic number.

It is an amenable number.

40370073 is a deficient number, since it is larger than the sum of its proper divisors (13456695).

40370073 is a wasteful number, since it uses less digits than its factorization.

40370073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13456694.

The product of its (nonzero) digits is 1764, while the sum is 24.

The square root of 40370073 is about 6353.7448012963. The cubic root of 40370073 is about 343.0466465529.

Adding to 40370073 its reverse (37007304), we get a palindrome (77377377).

The spelling of 40370073 in words is "forty million, three hundred seventy thousand, seventy-three".