406993441 has 4 divisors (see below), whose sum is σ = 424688832. Its totient is φ = 389298052.

The previous prime is 406993427. The next prime is 406993459. The reversal of 406993441 is 144399604.

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 406993441 - 2⁷ = 406993313 is a prime.

It is a super-2 number, since 2×406993441² = 331287322034040962, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 406993394 and 406993403.

It is not an unprimeable number, because it can be changed into a prime (406993241) 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, 8847661 + ... + 8847706.

It is an arithmetic number, because the mean of its divisors is an integer number (106172208).

Almost surely, 2^406993441 is an apocalyptic number.

It is an amenable number.

406993441 is a deficient number, since it is larger than the sum of its proper divisors (17695391).

406993441 is a wasteful number, since it uses less digits than its factorization.

406993441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17695390.

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 406993441 is about 20174.0784423973. The cubic root of 406993441 is about 741.0755245702.

The spelling of 406993441 in words is "four hundred six million, nine hundred ninety-three thousand, four hundred forty-one".