407045381 has 4 divisors (see below), whose sum is σ = 407131200. Its totient is φ = 406959564.

The previous prime is 407045377. The next prime is 407045411. The reversal of 407045381 is 183540704.

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 407045381 - 2² = 407045377 is a prime.

It is a super-2 number, since 2×407045381² = 331371884386870322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (407045311) 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, 35351 + ... + 45428.

It is an arithmetic number, because the mean of its divisors is an integer number (101782800).

Almost surely, 2^407045381 is an apocalyptic number.

It is an amenable number.

407045381 is a deficient number, since it is larger than the sum of its proper divisors (85819).

407045381 is an equidigital number, since it uses as much as digits as its factorization.

407045381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85818.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 407045381 is about 20175.3656968096. The cubic root of 407045381 is about 741.1070482768.

The spelling of 407045381 in words is "four hundred seven million, forty-five thousand, three hundred eighty-one".