149905597 has 8 divisors (see below), whose sum is σ = 150839552. Its totient is φ = 148975200.

The previous prime is 149905589. The next prime is 149905603. The reversal of 149905597 is 795509941.

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 149905597 - 2³ = 149905589 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 149905597.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149905397) 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, 150772 + ... + 151762.

It is an arithmetic number, because the mean of its divisors is an integer number (18854944).

Almost surely, 2^149905597 is an apocalyptic number.

It is an amenable number.

149905597 is a deficient number, since it is larger than the sum of its proper divisors (933955).

149905597 is an equidigital number, since it uses as much as digits as its factorization.

149905597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1779.

The product of its (nonzero) digits is 510300, while the sum is 49.

The square root of 149905597 is about 12243.5941210087. The cubic root of 149905597 is about 531.2177965808.

The spelling of 149905597 in words is "one hundred forty-nine million, nine hundred five thousand, five hundred ninety-seven".