40239954 has 12 divisors (see below), whose sum is σ = 87186606. Its totient is φ = 13413312.

The previous prime is 40239923. The next prime is 40239961. The reversal of 40239954 is 45993204.

It can be written as a sum of positive squares in only one way, i.e., 36542025 + 3697929 = 6045^2 + 1923^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1117759 + ... + 1117794.

Almost surely, 2^40239954 is an apocalyptic number.

40239954 is an abundant number, since it is smaller than the sum of its proper divisors (46946652).

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

40239954 is a wasteful number, since it uses less digits than its factorization.

40239954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2235561 (or 2235558 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 40239954 is about 6343.4969851021. The cubic root of 40239954 is about 342.6776856986.

The spelling of 40239954 in words is "forty million, two hundred thirty-nine thousand, nine hundred fifty-four".