40613421 has 4 divisors (see below), whose sum is σ = 54151232. Its totient is φ = 27075612.

The previous prime is 40613407. The next prime is 40613483. The reversal of 40613421 is 12431604.

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 not a de Polignac number, because 40613421 - 2¹⁵ = 40580653 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 (40613401) 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, 6768901 + ... + 6768906.

It is an arithmetic number, because the mean of its divisors is an integer number (13537808).

Almost surely, 2^40613421 is an apocalyptic number.

It is an amenable number.

40613421 is a deficient number, since it is larger than the sum of its proper divisors (13537811).

40613421 is a wasteful number, since it uses less digits than its factorization.

40613421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13537810.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 40613421 is about 6372.8659957667. The cubic root of 40613421 is about 343.7345533114.

The spelling of 40613421 in words is "forty million, six hundred thirteen thousand, four hundred twenty-one".