100309457 has 2 divisors, whose sum is σ = 100309458. Its totient is φ = 100309456.

The previous prime is 100309441. The next prime is 100309471. The reversal of 100309457 is 754903001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100080016 + 229441 = 10004^2 + 479^2 .

It is a cyclic number.

It is not a de Polignac number, because 100309457 - 2⁴ = 100309441 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (100309427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50154728 + 50154729.

It is an arithmetic number, because the mean of its divisors is an integer number (50154729).

Almost surely, 2^100309457 is an apocalyptic number.

It is an amenable number.

100309457 is a deficient number, since it is larger than the sum of its proper divisors (1).

100309457 is an equidigital number, since it uses as much as digits as its factorization.

100309457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 100309457 is about 10015.4608980316. The cubic root of 100309457 is about 464.6371810434.

The spelling of 100309457 in words is "one hundred million, three hundred nine thousand, four hundred fifty-seven".