149970497 has 8 divisors (see below), whose sum is σ = 154308840. Its totient is φ = 145664640.

The previous prime is 149970493. The next prime is 149970517. The reversal of 149970497 is 794079941.

It can be written as a sum of positive squares in 4 ways, for example, as 34386496 + 115584001 = 5864^2 + 10751^2 .

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 149970497 - 2² = 149970493 is a prime.

It is a super-2 number, since 2×149970497² = 44982299940854018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149970493) 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, 1403 + ... + 17375.

It is an arithmetic number, because the mean of its divisors is an integer number (19288605).

Almost surely, 2^149970497 is an apocalyptic number.

It is an amenable number.

149970497 is a deficient number, since it is larger than the sum of its proper divisors (4338343).

149970497 is a wasteful number, since it uses less digits than its factorization.

149970497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16243.

The product of its (nonzero) digits is 571536, while the sum is 50.

The square root of 149970497 is about 12246.2441997537. The cubic root of 149970497 is about 531.2944471786.

The spelling of 149970497 in words is "one hundred forty-nine million, nine hundred seventy thousand, four hundred ninety-seven".