40072947 has 8 divisors (see below), whose sum is σ = 54673344. Its totient is φ = 26093928.

The previous prime is 40072943. The next prime is 40072951. The reversal of 40072947 is 74927004.

It is an interprime number because it is at equal distance from previous prime (40072943) and next prime (40072951).

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

It is not a de Polignac number, because 40072947 - 2² = 40072943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40072943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155193 + ... + 155450.

It is an arithmetic number, because the mean of its divisors is an integer number (6834168).

Almost surely, 2^40072947 is an apocalyptic number.

40072947 is a deficient number, since it is larger than the sum of its proper divisors (14600397).

40072947 is a wasteful number, since it uses less digits than its factorization.

40072947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310689.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 40072947 is about 6330.3196601751. The cubic root of 40072947 is about 342.2029591106.

The spelling of 40072947 in words is "forty million, seventy-two thousand, nine hundred forty-seven".