900004157 has 8 divisors (see below), whose sum is σ = 1026249336. Its totient is φ = 781903872.

The previous prime is 900004151. The next prime is 900004163. The reversal of 900004157 is 751400009.

It is an interprime number because it is at equal distance from previous prime (900004151) and next prime (900004163).

It can be written as a sum of positive squares in 4 ways, for example, as 249039961 + 650964196 = 15781^2 + 25514^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 900004157 - 2⁸ = 900003901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (900004151) 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, 2035988 + ... + 2036429.

It is an arithmetic number, because the mean of its divisors is an integer number (128281167).

Almost surely, 2^900004157 is an apocalyptic number.

It is an amenable number.

900004157 is a deficient number, since it is larger than the sum of its proper divisors (126245179).

900004157 is a wasteful number, since it uses less digits than its factorization.

900004157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4072447.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 900004157 is about 30000.0692832533. The cubic root of 900004157 is about 965.4908710994.

The spelling of 900004157 in words is "nine hundred million, four thousand, one hundred fifty-seven".