40897623 has 16 divisors (see below), whose sum is σ = 60159456. Its totient is φ = 24552960.

The previous prime is 40897621. The next prime is 40897643. The reversal of 40897623 is 32679804.

It is not a de Polignac number, because 40897623 - 2¹ = 40897621 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40897621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11190 + ... + 14387.

It is an arithmetic number, because the mean of its divisors is an integer number (3759966).

Almost surely, 2^40897623 is an apocalyptic number.

40897623 is a deficient number, since it is larger than the sum of its proper divisors (19261833).

40897623 is a wasteful number, since it uses less digits than its factorization.

40897623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25634.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 40897623 is about 6395.1249401400. The cubic root of 40897623 is about 344.5344782062.

The spelling of 40897623 in words is "forty million, eight hundred ninety-seven thousand, six hundred twenty-three".