100239490 has 16 divisors (see below), whose sum is σ = 194310648. Its totient is φ = 37011456.

The previous prime is 100239481. The next prime is 100239499. The reversal of 100239490 is 94932001.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (100239481) and next prime (100239499).

It can be written as a sum of positive squares in 4 ways, for example, as 45819361 + 54420129 = 6769^2 + 7377^2 .

It is not an unprimeable number, because it can be changed into a prime (100239499) 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, 385407 + ... + 385666.

Almost surely, 2^100239490 is an apocalyptic number.

100239490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100239490 is a deficient number, since it is larger than the sum of its proper divisors (94071158).

100239490 is a wasteful number, since it uses less digits than its factorization.

100239490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771093.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 100239490 is about 10011.9673391397. The cubic root of 100239490 is about 464.5291259903.

The spelling of 100239490 in words is "one hundred million, two hundred thirty-nine thousand, four hundred ninety".