40276921 has 4 divisors (see below), whose sum is σ = 40294144. Its totient is φ = 40259700.

The previous prime is 40276879. The next prime is 40276931. The reversal of 40276921 is 12967204.

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 40276921 - 2⁷ = 40276793 is a prime.

It is a super-3 number, since 3×40276921³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40276931) 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, 4425 + ... + 10006.

It is an arithmetic number, because the mean of its divisors is an integer number (10073536).

Almost surely, 2^40276921 is an apocalyptic number.

It is an amenable number.

40276921 is a deficient number, since it is larger than the sum of its proper divisors (17223).

40276921 is a wasteful number, since it uses less digits than its factorization.

40276921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17222.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 40276921 is about 6346.4100876007. The cubic root of 40276921 is about 342.7825888076.

The spelling of 40276921 in words is "forty million, two hundred seventy-six thousand, nine hundred twenty-one".