40209704424 has 40 divisors (see below), whose sum is σ = 112624405410. Its totient is φ = 13403234592.

The previous prime is 40209704387. The next prime is 40209704519. The reversal of 40209704424 is 42440790204.

40209704424 is a `hidden beast` number, since 4 + 0 + 209 + 7 + 0 + 442 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 36755791524 + 3453912900 = 191718^2 + 58770^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 31025359 + ... + 31026654.

Almost surely, 2^40209704424 is an apocalyptic number.

It is an amenable number.

40209704424 is an abundant number, since it is smaller than the sum of its proper divisors (72414700986).

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

40209704424 is a wasteful number, since it uses less digits than its factorization.

40209704424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62052031 (or 62052018 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The spelling of 40209704424 in words is "forty billion, two hundred nine million, seven hundred four thousand, four hundred twenty-four".