90139010 has 32 divisors (see below), whose sum is σ = 180375552. Its totient is φ = 32207040.

The previous prime is 90139009. The next prime is 90139019. The reversal of 90139010 is 1093109.

It is a super-2 number, since 2×90139010² = 16250082247560200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90139019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7154 + ... + 15213.

It is an arithmetic number, because the mean of its divisors is an integer number (5636736).

Almost surely, 2^90139010 is an apocalyptic number.

90139010 is an abundant number, since it is smaller than the sum of its proper divisors (90236542).

90139010 is a wasteful number, since it uses less digits than its factorization.

90139010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22418.

The product of its (nonzero) digits is 243, while the sum is 23.

The square root of 90139010 is about 9494.1566239451. The cubic root of 90139010 is about 448.3710819211.

The spelling of 90139010 in words is "ninety million, one hundred thirty-nine thousand, ten".