1009254390 has 32 divisors (see below), whose sum is σ = 2423838816. Its totient is φ = 268953600.

The previous prime is 1009254377. The next prime is 1009254391. The reversal of 1009254390 is 934529001.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1009254391) 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, 37524 + ... + 58536.

It is an arithmetic number, because the mean of its divisors is an integer number (75744963).

Almost surely, 2^1009254390 is an apocalyptic number.

1009254390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1009254390 is an abundant number, since it is smaller than the sum of its proper divisors (1414584426).

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

1009254390 is a wasteful number, since it uses less digits than its factorization.

1009254390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22624.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 1009254390 is about 31768.7643763493. The cubic root of 1009254390 is about 1003.0753293211.

The spelling of 1009254390 in words is "one billion, nine million, two hundred fifty-four thousand, three hundred ninety".