40464321 has 8 divisors (see below), whose sum is σ = 55100544. Its totient is φ = 26402160.

The previous prime is 40464317. The next prime is 40464323. The reversal of 40464321 is 12346404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40464321 - 2² = 40464317 is a prime.

It is a super-2 number, since 2×40464321² = 3274722547982082, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40464291 and 40464300.

It is not an unprimeable number, because it can be changed into a prime (40464323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143350 + ... + 143631.

It is an arithmetic number, because the mean of its divisors is an integer number (6887568).

Almost surely, 2^40464321 is an apocalyptic number.

It is an amenable number.

40464321 is a deficient number, since it is larger than the sum of its proper divisors (14636223).

40464321 is a wasteful number, since it uses less digits than its factorization.

40464321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287031.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 40464321 is about 6361.1572060436. The cubic root of 40464321 is about 343.3133980528.

It can be divided in two parts, 404643 and 21, that multiplied together give a triangular number (8497503 = T₄₁₂₂).

The spelling of 40464321 in words is "forty million, four hundred sixty-four thousand, three hundred twenty-one".