445401381 has 8 divisors (see below), whose sum is σ = 594019584. Its totient is φ = 296858720.

The previous prime is 445401367. The next prime is 445401403. The reversal of 445401381 is 183104544.

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

It is a cyclic number.

It is not a de Polignac number, because 445401381 - 2¹⁴ = 445384997 is a prime.

It is a super-2 number, since 2×445401381² = 396764780393414322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445401331) 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, 3285 + ... + 30026.

It is an arithmetic number, because the mean of its divisors is an integer number (74252448).

Almost surely, 2^445401381 is an apocalyptic number.

It is an amenable number.

445401381 is a deficient number, since it is larger than the sum of its proper divisors (148618203).

445401381 is a wasteful number, since it uses less digits than its factorization.

445401381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37771.

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 445401381 is about 21104.5346075198. The cubic root of 445401381 is about 763.6901451982.

The spelling of 445401381 in words is "four hundred forty-five million, four hundred one thousand, three hundred eighty-one".