40770381 has 4 divisors (see below), whose sum is σ = 54360512. Its totient is φ = 27180252.

The previous prime is 40770377. The next prime is 40770383. The reversal of 40770381 is 18307704.

It is a happy number.

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 not a de Polignac number, because 40770381 - 2² = 40770377 is a prime.

It is a super-2 number, since 2×40770381² = 3324447933770322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40770383) 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, 6795061 + ... + 6795066.

It is an arithmetic number, because the mean of its divisors is an integer number (13590128).

Almost surely, 2^40770381 is an apocalyptic number.

It is an amenable number.

40770381 is a deficient number, since it is larger than the sum of its proper divisors (13590131).

40770381 is a wasteful number, since it uses less digits than its factorization.

40770381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13590130.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 40770381 is about 6385.1688309707. The cubic root of 40770381 is about 344.1767980909.

The spelling of 40770381 in words is "forty million, seven hundred seventy thousand, three hundred eighty-one".