40451394 has 8 divisors (see below), whose sum is σ = 80902800. Its totient is φ = 13483796.

The previous prime is 40451393. The next prime is 40451407. The reversal of 40451394 is 49315404.

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

40451394 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (40451393) 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, 3370944 + ... + 3370955.

It is an arithmetic number, because the mean of its divisors is an integer number (10112850).

Almost surely, 2^40451394 is an apocalyptic number.

40451394 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40451394 is a wasteful number, since it uses less digits than its factorization.

40451394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6741904.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 40451394 is about 6360.1410361721. The cubic root of 40451394 is about 343.2768351016.

Adding to 40451394 its reverse (49315404), we get a palindrome (89766798).

The spelling of 40451394 in words is "forty million, four hundred fifty-one thousand, three hundred ninety-four".