40279290 has 32 divisors (see below), whose sum is σ = 102358080. Its totient is φ = 10109184.

The previous prime is 40279277. The next prime is 40279313. The reversal of 40279290 is 9297204.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38980 + ... + 39999.

It is an arithmetic number, because the mean of its divisors is an integer number (3198690).

Almost surely, 2^40279290 is an apocalyptic number.

40279290 is an abundant number, since it is smaller than the sum of its proper divisors (62078790).

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

40279290 is a wasteful number, since it uses less digits than its factorization.

40279290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79006.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 40279290 is about 6346.5967258051. The cubic root of 40279290 is about 342.7893092488.

The spelling of 40279290 in words is "forty million, two hundred seventy-nine thousand, two hundred ninety".