39540090 has 16 divisors (see below), whose sum is σ = 94896288. Its totient is φ = 10544016.

The previous prime is 39540073. The next prime is 39540101. The reversal of 39540090 is 9004593.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 1318003 = 39540090 / (3 + 9 + 5 + 4 + 0 + 0 + 9 + 0).

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, 658972 + ... + 659031.

It is an arithmetic number, because the mean of its divisors is an integer number (5931018).

Almost surely, 2^39540090 is an apocalyptic number.

39540090 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

39540090 is an abundant number, since it is smaller than the sum of its proper divisors (55356198).

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

39540090 is a wasteful number, since it uses less digits than its factorization.

39540090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1318013.

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 39540090 is about 6288.0911252939. The cubic root of 39540090 is about 340.6794084735.

The spelling of 39540090 in words is "thirty-nine million, five hundred forty thousand, ninety".