40051974 has 16 divisors (see below), whose sum is σ = 80166960. Its totient is φ = 13340160.

The previous prime is 40051967. The next prime is 40052009. The reversal of 40051974 is 47915004.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11422 + ... + 14510.

It is an arithmetic number, because the mean of its divisors is an integer number (5010435).

Almost surely, 2^40051974 is an apocalyptic number.

40051974 is an abundant number, since it is smaller than the sum of its proper divisors (40114986).

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

40051974 is a wasteful number, since it uses less digits than its factorization.

40051974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5255.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 40051974 is about 6328.6628919544. The cubic root of 40051974 is about 342.1432490431.

Adding to 40051974 its reverse (47915004), we get a palindrome (87966978).

The spelling of 40051974 in words is "forty million, fifty-one thousand, nine hundred seventy-four".